All posts by thenandakumars

Third time is a charm

We setup time with Steve to go flying on April 29, 2014 at 11am. He had told us that the club’s Cessna 172 was down waiting for a new propeller which had been ordered. So we were going to fly the 152 and since it was a 2-seater, he would take Srinath and I flying one after the other. Armed with knowledge about weather (from Don’s ground school classes) and the ability to interpret a METAR, I woke up that morning to look up KLVK’s weather report. The conditions at 8am called for a 2000′ ceiling and light winds. Being a small airport, there was no TAF so I looked up Oakland’s forecast. By 11am the ceiling was going up to 2500′ and still light winds. We figured we could at least fly a pattern around the airport (since one had to be 500′ below the clouds and 1000′ above congested areas for VFR). That would leave us with a roughly 1000′ band in which to fly patterns. We arrived at the airport and the skies seemed to have scattered clouds. However Steve pointed to the western sky where dark clouds were forming and apparently pushing towards us. Srinath was disappointed when he said we couldn’t fly that day. So we chatted for about an hour and a half, getting to know each other and discussing our expectations. He gave us a list of items to buy and suggested that we get headsets before anything else. That night after research, I ordered a David Clark H10-13 S stereo headset from amazon.com since I was going flying with Don for the demo flight on May 3rd. Steve suggested it will be at least a week before the propeller arrived, after which it would be a few days to install then test fly to confirm airworthiness. So I figured I’d check out the headset before deciding what to buy for Srinath.

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DC H10-13 S

Early morning on May 3, I checked the METAR for Reid-Hillview airport (KRHV) and it wasn’t good. OVC012. Nearby San Jose International Airport had a TAF which mentioned that the ceiling would rise to 2000′ by 9am. I sent Don a text and asked if we were still ON. He asked me to come over and then we could decide. Midway to the airport, Don texted me back that he was already at the airport and he didn’t anticipate the clouds would burn off until noon. So we canceled the flight, rescheduled for the 8th and I returned home. The headset arrived a couple of days later.

The weather on the 8th was pretty good and my flight was at 12:30pm out of KRHV. Unfortunately the previous day I was alerted to a NOTAM TFR for the area since President Obama was flying into town for a fundraising event. Fortunately the TFR only went into effect starting 3pm that afternoon. Third time was a charm. Don was waiting for me and he had already completed the walk around checklist. We got into the cockpit, ran through the preflight checklist and very quickly took to the air. Before that, Don handed me his noise-canceling David Clark DC PRO-X to try out. It was slightly quieter than my headset and much smaller in profile. Once we were airborne and climbed to 1000′, Don handed me the controls. We headed for the hills and the practice area above Caleveras Reservoir. It was a little bumpy since it was drizzling towards the south over Anderson lake. I made some turns, then we idled the engine to demonstrate glide slope, stability demonstration, trim, climbs and descents. Don took over the controls as we flew back into a pattern landing for a total 0.8 hour flight. I ordered the DC PRO-X for Srinath.

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DC PRO-X

Finding an instructor

In the summer of 2013 we began looking for an introductory flight. A search on YipIt and Groupon revealed a few schools in our area that offered a 1-hour bay aerial tour for close to $200 for 2 people. After dillydallying for a few days I gave up. Srinath didn’t. During the christmas break, I took the next step of calling up a couple of places and finding out more about the introductory flights they offered. Ahart aviation out of Livermore (KLVK) was the closest and I scheduled a bay area tour for January 18 to leave at noon.

The day arrived. We had no clue what to expect when we arrived at Ahart’s lobby. We checked in and were asked to wait for the pilot to arrive. There was a bookshelf in front of the couch so we asked the receptionist to give us a book to flip through. She handed us the FAR AIM as well as the Pilot’s Handbook of Aeronautical Knowledge (PHOAK). The FAR AIM looked daunting but Srinath seemed familiar with it and was ready to peruse. I randomly flipped through the PHOAK and remember skimming through stalls and weather patterns.

Our pilot was James and he drove us to a Cessna 172 that was tied down. After walking us around the plane and through a preflight checklist, we soon took to the air with Srinath on the left seat and myself on the backseat with a Canon 6D ready to shoot videos and images. This was supposed to be an opportunity to evaluate James as a potential instructor but after the flight I had no idea what to ask him. The only piece of information I recall from our conversation was him mentioning an interest in working for an airline and that he was building up hours.

We have quite a few pilots at my workplace and an interest mailing group. Upon seeing a note from Bill that indicated he was a CFI out of Livermore, I reached for an opportunity to pick his brains. A day later we were chatting about advice on choosing an instructor. He suggested that I look for somebody who I didn’t feel would leave before my training was over. He also strongly suggested undergoing unusual attitude training with an aerobatics instructor. His work involved quite a bit of travel so he wasn’t ready to sign up a new student. A few days later, I met with Ron who was another CFI and a colleague. His two pieces of advise were to train on the same type of aircraft which I would most likely fly after receiving a license. And to find an instructor who would be open to let Srinath and I train together. One of us observing from the backseat while the other was flying will be a very valuable learning tool, he said. Unfortunately, he flew out of Palo Alto which was too far for us, otherwise I would have seriously considered signing up with him. At a pilot’s lunch a few days later, another colleague strongly suggested going through a ground school.

Right around this time I called up Tradewinds Aviation in San Jose to find out about their ground school. The person who answered at the front desk mentioned they had a Groupon offer for a 14-week ground school program plus a 1-hour demo flight for $189. That was a sweet deal and I really enjoyed Don’s class. Tradewinds was too far away from where I lived and more importantly, their hourly rates were quite steep otherwise I would have signed up with Don as my instructor in a heartbeat.

Bill had suggested that I check out the Flying Particles club at Livermore. The club meets once a month and an hour prior to the meeting the membership chair takes prospective members on a tour of their hangar. Srinath and I signed up for their February tour when we got to see all their aircraft up close. It was at the meeting later that night that we met Steve who was one of their CFIs as well as the Safety Pilot for the club. He was quite vocal, funny and introduced his student who had just received his private pilot’s license. We spoke with him after the meeting and decided to do a demo flight with the intention of seriously evaluating him as our instructor. The club was largely comprised of members who had retired from the Lawrence Livermore Lab and clearly didn’t have any ambitions of going on to work for an airline.

Prelude

It all started with a trip to the Hillier aviation museum in San Carlos, CA in early December 2011. After touring the exhibits inside and outside, we went upstairs where a few computer stations were setup with Flight Simulator. We all had a chance to try our hand at flying and landing a plane. My elder son Srinath was hooked by this experience and asked Santa to get him Microsoft Flight Simulator X and a Thrustmaster T-Flight Hotas X Flight Stick for Christmas. He has been flying the simulator ever since, starting with gliders tracking guideposts in the sky, then slowly graduating to larger aircraft and now working his way up through Virtual ATC.

My interest in aviation started when I was growing up in India. We were located close enough to and on the approach route for Meenambakkam airport (MAA) that we could tell the rough time without looking at the clock simply based on the roar of jet engines as the occasional scheduled flights flew overhead. From the terrace we could see planes take off and land at the airport in the distance. It remained an interesting pastime. A number of years later when living near Denver, I used to frequent a local airport to watch GA flights and shoot pictures. What was an interesting pastime graduated to an interest but it was trumped by the other priorities in my life at that time. When Srinath became interested in flying is when I began looking more deeply into flight training options.

After months of superficial research, we finally called Ahart Aviation in Livermore, CA and scheduled an intro flight on January 18, 2014.  The weather was perfect – SKC, P6SM, 00000KT. We were paired up with James as our pilot and I let Srinath fly the left seat. My plan was to shoot images and video to remember this first flight. After going through the pre-flight checklist, James obliged our request to fly to the Golden Gate bridge and execute a touch-and-go at Oakland en route. The Cessna 172 felt very compact and my nervous jitters vanished upon takeoff.

Here is the video of our first flight:

What does Watson’s Jeopardy win mean to the internet?

During the week of Valentine’s day earlier this month, IBM’s Watson, a Jeopardy playing supercomputer, handily beat two human contestants – Ken Jennings and Brad Rutter – who until now were the most successful winners. IBM announced that they will sell the question-and-answer natural language processing technology to hospitals and call centers.

IBM fed Watson the entire contents of Wikipedia, dictionary, thesaurus and the internet movie database, without any special processing or categorization. Watson’s technology enables it to assimilate the raw data and store it in a form that enables rapid retrieval. Contestants will ring in the buzzer as soon as Alex Trebek has finished asking the question so Watson has very few seconds to determine the right answer. While Ken and Brad had to listen to the question and manually ring the buzzer, Watson also had to manually ring the buzzer but it was fed the question in a text form as soon as it appeared to all contestants on the video display. Watson proved to be incredibly quick at the buzzer, especially in the first of two contests, but the point is not about winning. It is about how much natural language technology has progressed to the point that tricky questions with metaphorical and alliterative undertones can be parsed and processed by a computer. What does all this mean to internet technology?

First, I should point out that a San Francisco-based company, Powerset, released a search engine back in 2008 that used natural language technology to provide answers and relevant links. For instance, asking “How many days to christmas” will result in a number, not a page full of web links that the user has to view and hunt for an answer. Microsoft bought Powerset in 2008. Today when you search for the same query on Bing, you get back a page full of web links, as does Google. So for some reason, Microsoft has not meaningfully leveraged natural language search technology. Google and Microsoft should fear Watson. Google’s primary value proposition is serving relevant search results and it appears Watson is much more capable of meeting that customer need if deployed correctly.

Internet forums depend upon humans to respond to each other. Today, on average, there is a low probability of getting a timely and high quality answer. Ask Watson “What kinds of plants will do well in my backyard” and it gives you a useful set of recommendations, along with a confidence score, much like how it showed its confidence score for each of the top three answers it determined for every question on Jeopardy. Sites like Yahoo Answers, Amazon’s Askville and Ask Jeeves should be worried.

IBM has already announced it will serve call centers where this technology makes a lot of sense. In particular, this will be valuable to companies that have a wealth of knowledge base that Watson can mine. FAQs on websites will still have to be curated manually to meet stylistic guidelines and for now Watson is unlikely to encroach into that space.

Improving LinkedIn’s Usability

As a long-time user, I’ve found LinkedIn very valuable in not only nurturing my professional network but also in researching job opportunities and job functions of current employees in target companies. They filed an S-1 with the SEC on Jan 27, 2011 as the first official step on the road to an IPO. LinkedIn is looking to raise $175 million and use the net proceeds in, among other things, further product development. Here are my thoughts on improving LinkedIn’s usability and further its relevance to users.

Over the years, I’ve added almost 500 contacts to my network but it has been ages since I worked with most of them. I recently located a contact in a target company and we were related to a mutual contact who I requested to introduce me. It turned out that my friend worked with that person a few years ago and has been out of touch. It would be useful if LinkedIn shows a recency indicator for each connection. Users can use that either as a reminder to reach out and strengthen the connection or to retire the connection over a period of time. Fewer strong connections are more useful than many weak connections.

“Jobs you may be interested in” – only the 8th job opportunity suggested is the first one in my location. Tweak the prioritization of results to weight local jobs higher, perhaps run an A-B test to measure conversion. Along that same vein, if I’ve run keyword searches in the past, factor that into the recommendation. The current algorithm appears to disregard that, making the list less interesting.

Old Spice ad campaign – Made to Stick

What makes the recent Old Spice advertisement campaign so memorable?

During the recent world cup soccer finals, I recalled seeing an advertisement for Old Spice that “broke my guessing machine”. A well built and good looking black man (Isaiah Mustafa) was the spokesperson, not a white man surfing the tube of giant waves. Among all the advertisements that day, this one stuck in my mind. Days later, I read about this ad campaign becoming one of the most followed and watched videos on YouTube. Borrowing ideas from Chip and Dan Heath’s Made to Stick: Why Some Ideas Survive and Others Die, here is why I think the message stuck.

Simple – the old spice man can smell good despite baking a gourmet cake in a kitchen he built himself. Why wouldn’t a lady want her man to Smell like a Man, Man by using the old spice bodywash?

Unexpected – my guessing machine was broken seeing the unexpected spokesperson, jolting me into attention.

Concrete – direct imagery to indicate that old spice’s fragrance lasts – an adventure loving (walking on a floating log), hard working (built a kitchen with his own hands), fun loving (biker) person who still smells good.

Credible – looking at this strong and good looking guy, why wouldn’t you believe he is all of the above?

Emotional – the messages are very personalized. Following the airing of the commercial, the ad agency seeded social networks with an invitation for people to ask questions of Isaiah’s character. As the questions started flowing in, they made 87 short personalized video responses and posted them back to YouTube, thus appealing to people’s egos. What better way to make the brand memorable?

Stories – each story in the video responses are connection plots, making people care.

Made to Stick – review

In Made to Stick: Why Some Ideas Survive and Others Die, Chip and Dan Heath discuss a template for formulating ideas in such a manner that it is memorable and even spreads spontaneously. The template is SUCCESS – Simple, Unexpected, Concrete, Credible, Emotional and Story.

At the heart of the book is this concept of Curse of Knowledge and how to avoid it. Simply stated, the concept is that one’s deep understanding of an idea is also the reason why it is not effectively communicated. The analogy provided is a person hearing a tune in their head who taps to the tune so others can guess the song, then wonders why they struggle to guess (you can try this experiment at home).

Simplicity – find the core of an idea. Weed out not only superfluous and tangential elements but also ideas that are not the most important. However, don’t dumb down the idea. Make/find the core mission, then find a compact way to communicate it.

On the battlefield, a commander’s intent is a crisp statement that conveys a plan’s goal and the desired end state of an operation. It does not specify so much detail that it risks being rendered obsolete by unpredictable events.

Use analogies to communicate instead of defining something in its entirety. “Generative analogies” are those that generate new perceptions, explanations and inventions. The founder of slideshare pitched his company to our Entrepreneurship class at Haas and started off by very succinctly saying that “slideshare is the YouTube of PowerPoint”.

Unexpectedness – when we encounter the unexpected, surprise jolts us to attention, generates interest and curiosity. Use an element of surprise to convey insight relevant to the core message. Figure out what is counter-intuitive about the message and communicate it to break audience’s guessing machines. To be most effective, surprise must be post-predictable – tying together all the clues to which you’ve been exposed all along.

“People are tempted to tell you everything, right up front, with perfect accuracy, when they should be giving you just enough info to be useful, then a little more, then a little more”. Gap theory is that people are anxious to fill a gap in their knowledge. Our tendency is to tell people the facts. Instead, open a gap in their knowledge, then close them with details.

Concrete ideas are memorable. Concrete messages can be examined with your senses and creates an imagery that can be visualized.

Credible – conveying an idea using real people, particularly authorities, is the most compelling and credible way. Honesty and trustworthiness of our sources, not their status, makes them authorities. Sometimes anti-authorities can be more powerful than authorities. For example, a chain smoker with terminal lung cancer is a more effective anti-authority figure to discuss the harmful effects of smoking, then the surgeon general’s statutory warning.

Vivid, concrete details lend credibility to an idea. Statistics should almost always be used to illustrate a relationship. People should remember the relationship more than the number itself. Generate a “human scale” for the statistic that people can relate to and experience.

Emotional – the most basic way to make people care is to draw an association between something they don’t yet care about with something they do care about. Incorporate self-interest into the message. Emphasize benefits, not features – “what is in it for me?”

Stories – a credible idea makes people believe. An emotional idea makes people care. Right stories make people act.

Fight the temptation to skip directly to the “tips” and leave out the story. You can re-construct a moral from a story but you can’t re-construct a story from a moral.

Stories with a challenge plot inspire us to act by describing a protagonist who overcomes formidable challenge to succeed. Connection plots inspire us through relationships with other people. Creativity plots make us want to do something different and experiment with new approaches.

Will Deepwater Horizon become Ixtoc 2

Current estimates of the amount of oil being spewed from BP’s Deepwater Horizon rig blowout, the ruptured oil well in the Gulf of Mexico near Lousiana’s coast, range between 12,000 and 19,000 barrels a day. Assuming the low end of that range of 12,000 barrels a day, at 42 US gallons per barrel of oil, over 24 million gallons of oil have already leaked into the Gulf of Mexico. By comparison, the 1989 Exxon Valdez disaster in Alaska’s Prince William Sound spilled 11 million gallons of oil and the 1979 Ixtoc 1 disaster, also in the Gulf of Mexico, spilled 173 million gallons of oil [1]. Oil is supposed to be gushing at an incredible pressure of 23,000 lbs/square inch. Combine that with inhospitable depths of over 5000 ft of water and the Deepwater Horizon disaster becomes quite a challenge to counter.

Both the Ixtoc and Deepwater Horizon disasters involved a failure of the blowout preventer. The Ixtoc 1 site was located in only 160ft of water (divers were dispatched to implement remedies) but Pemex had no contingency plan set up in case of a blowout [4]. Even after 20 years, BP didn’t have a contingency plan. These aren’t the only two incidents when blowout preventers failed. Within a few months after the Ixtoc blowout, there were two more such failures – an incident on Funiwa-5 off Nigeria’s coast and on Ekofisk Bravo in the Norweigian North Sea [3]. While I don’t support BP’s utter lack of disaster preparedness, that BP received its drilling permits from Obama government’s agency makes the administration’s PR offensive campaign against BP hypocritical.

The Macondo Prospect, site of the Deepwater Horizon, has estimated reserves of 50 million barrels of oil, compared with 800 million barrels of reserves [2] at the site of the Ixtoc disaster.

Pemex (Petróleos Mexicanos), the culprit in the Ixtoc spill, drilled two relief wells to reduce pressure in the main well so it could be capped off. This is the same strategy being attempted at Deepwater Horizon. Drilling relief wells was estimated to take 3 months [5] (same time as is projected in the current disaster) but it actually took over 5 months to complete.

While you may or may not consider BP’s actions adequate to combat the disaster, Shell and other major oil companies seemingly have carte blanche to spill in the oil fields of the Niger delta that supplies 40% of US crude oil imports. This is too high a cost to pay for “economic development”.

I hope the Deepwater Horizon disaster does become this generation’s Three Mile Island. I’d like to see three actions come out of this incident. US government reducing oil subsidy thus raising fuel prices, regulating auto manufacturers to significantly and quickly improving fuel efficiency and investing in and subsidizing public transportation.

[1] Nancy Rabalais, Executive Director and Professor of Louisiana Universities Marine Consortium, on NPR Science Friday, May 7, 2010
[2] Oil & Gas Journal, March 31, 1980, pg. 54
[3] Oil Spills – Summing up the big one, The Economist, June 7, 1980, pg. 81
[4] Mistake by Mexican drilling crew is blamed for world’s worst oil spill, The Globe and Mail (Canada), August 1, 1979
[5] Blowout in the Gulf, Newsweek, June 25, 1979, pg. 67

Goldman Sachs and Abacus

“The role of a market maker is to make sure those they serve are getting the risk exposures they seek”, argued Lloyd Blankfein while testifying before the Senate Permanent Subcommittee on Investigations. According to this argument, Goldman had no fiduciary duty to its customers since it was not offering investment advice. But was Goldman a market maker or an underwriter in this synthetic CDO?

In early 2007, Goldman created a synthetic CDO (collateralized debt obligation) since one of its hedge fund customers, Paulson & Co., wanted to bet against the sub-prime mortgage market. That makes Goldman also an underwriter. Paulson was short on the CDO and Goldman had to take the other half of the trade as a market maker. In order to protect itself, Goldman purchased insurance on its long position from the likes of AIG. As the housing market fell, Goldman profited from insurance payouts while AIG was getting financial protection from the Fed. Investors with a long position in this CDO including IKB, a German bank and ACA, a bond insurance company together lost $1B. ACA’s losses were “backstopped” by the financial bailout.

At the heart of SEC’s case is Goldman’s failure of disclosure. IKB was allegedly told that a neutral portfolio manager selected the securities that went into the synthetic CDO, and not told that Paulson & Co. as well as ACA had a hand in picking securities. Goldman is also alleged to not have informed the markets last year when it received notification of a probe. Whether or not a hedge fund is participating in a trade (there naturally has to be a short side of the trade in a synthetic CDO) or whether they had a role to play in the composition of the CDO shouldn’t be important. Rather, it is important that the underwriter fully disclose the contents of the CDO and their risk tranche in the prospectus so an investor can make an informed investment decision on which side to take. Did ACA and IKB, large institutional investors do their due diligence before investing?

While the government is going after Goldman, many other banks wrote 2x-3x the amount in similarly risky CDOs. Today WSJ reported that the SEC may be investigating other firms as well.

MOG All Access

On Dec 2, 2009, MOG launched All Access, an on-demand “all you can eat” streaming music service for $5/month. MOG was founded in 2005 by David Hyman, ex-CEO of Gracenote, has 15+ employees and is based in Berkeley, CA. They recently raised $5MM from Menlo Ventures, $1.5MM from Simon Ventures a few months ago and in late April 2008, MOG received $2.8MM from UMG and Sony. Earlier, company raised $3.2MM in two angel rounds.

MOG has struck deals with all 4 major labels, Beggars and Ioda to power this service. Their catalog is supposed to contain over 5M tracks and they report over 10M visitors to their website each month.

MOG’s search feature works like the finder in Mac and auto-completion suggestions on our website – each typed character narrows search results. Suggestions are displayed in categories as you type – artist, album and tracks, along with inline play options for each. You can play songs by artist, tracks in an album, or individual tracks.

MOG’s streaming service is entirely web-based; no client installs are required. You log into their site to access their catalog and your own music library. Their music player is smart enough to detect log in/out state and seamlessly switches between full-length streaming and 30-second samples. From within the player you can buy content, save it to your library (in the cloud) or add it to a playlist. Playlists can be shared with friends on facebook although I did not try this feature.

The play button in the artist category in search (or the artist detail page) kicks off a “slider”-based artist radio feature. On one end of the slider, MOG plays songs only by that artist – all the songs by that artist. This is very cool and interesting they’ve negotiated such an agreement with labels. At the other end, it plays songs by that artist and similar others, much like Pandora. In-between slider settings play various proportions of songs by the artist relative to similar others.

Their artist detail page is quite feature rich. In addition to the artist radio link, they show customers reviews and news (something we don’t support on our store). One can “follow” the artist so they are notified via eMail whenever somebody posts anything about the artist. Artist detail page also shows popular playlists containing tracks by that artist. Finally, the social aspect – you can see users who listen to that artist the most.

MOG’gers or MOG bloggers seem to be their prized value proposition. Apparently there is a huge community of such music bloggers who contribute to reviews and posts on the MOG site. In addition to the social discovery and sharing features mentioned here, one can follow trusted MOG’gers so you see their posts on your home page (a la lala). User profile pages are customizable but I didn’t spend time digging into the specifics.

Playlists are first-class citizens – they are searchable by artist/album/track, sorted, can be public or private, can be shared with social networks (MOG11) and see who is listening to your playlist. Creating playlists is pretty easy and cool with drag’n’drop feature to re-order songs.

MOG is linking to Amazon for the “Buy” buttons. I found links are sprinkled in more places than tracks/albums are available or downloadable. For example, at track level, the buy option is displayed even for album-only tracks. From the player window, the Buy option spawns a keyword search page to amazon that is improperly constructed. There is significant room for improvement if they integrate with the Associates API.

Finally, the lyrics feature that can be invoked through the music player. MOG apparently has 3M lyrics in its database. During my exploration, I couldn’t stumble on any track with lyrics although I played songs by top artists. They did demo the feature in their video. Source of the lyrics is unclear (user contributed vs. vendor provided).

Overall, the $5 price points seems very tempting for the instant gratification of listening to anything that I can think of (in MOG’s fairly sizable catalog), plus the convenience of accessing my music library from any computer. Other competitors (Spotify etc.) are charging more than twice that amount for comparable paid services. MOG doesn’t yet seem to have a similar “portable” experience for devices.