Getting around, together

Riding the Rails: Celebrating Trains and Subway Commuter Life:

Train time is essential time, and rail travel isn’t strictly pragmatic. For many, the commute is their only time to read, think, and zone out.

For a brief window of several months, ten years ago, I rode the Dallas light rail to work. It was exactly as quoted. It was when I read, when I reflected on the world or just the day gone past. I often miss it.

…as Jacquelin Cangro writes in The Subway Chronicles, the “New York Subway is a microcosm of world culture. The train is the great equalizer. When the doors close, all of us — black or white, Sephardic or Catholic, Chinese or Indian — are going together, and no one will arrive any faster or in better style.”

Even more, I wish everyone had to partake of public transit. We spend too much time in our bubbles. Our offices, homes, social networks, and cars isolate us from each other. Perhaps we wouldn’t find ourself in this strange election cycle if people from different backgrounds and circumstances had to spend twenty minutes with each other several days a week.

Taking polluting cars off the road, reshaping our communities, greater safety, it’s all secondary to me. Growing our empathy with one weird trick to see each other and relate is the outcome I find most intriguing to good public transit.

A bold, future-retro Audi dash

I’m officially intrigued by the Audi TT and R8 going with no center display. The look is retro and functional. Will it annoy passengers, or do passengers who want to change the radio or see the map even matter in those cars? Worth noting that the 2016 A4 has the same display for the instrument cluster and a giant center display.

2015 Audi TTS

2015 Audi TTS

Another cool design detail: the A/C controls are on the center of the eyeball vents. Pretty cool!

Our current political Trolley Problem

As self-driving cars inch closer to a daily reality, the Trolley Problem seems to have entered our lexicon. In short, should a self-driving computer choose to avoid hitting a bunch of people and kill its single occupant as a result? Turns out people expect the car to protect the greater good second and their own skin first.

Maybe out our current political environment of unfettered gun violence, climate change, Trump-lead racism, Brexit-fueled xenophobia, and general apprehension about losing what we thought we’d earned are a kind of longer-term but still serious Trolley Problem. Would you vote to improve society at large even if it meant taking yourself down a ego/prestige/money notch?

Well when I put it that way, things seem pretty bleak!

I happened across an Alan Kay essay, Enlightened Imagination for Citizens, and it kinda helped me get through that bleakness. Some highlights:

In a raging flood, a man risks his life to save a swept away child, but two years earlier he voted against strengthening the levee whose breaching caused the flood. During an epidemic people work tirelessly to help the stricken, but ignored elementary sanitation processes that could have prevented the outbreak. More astoundingly, as many as 200,000 Americans die each year from diseases spread by their own doctors who have been ignoring elementary sanitation (including simply washing their hands when needed), but who then work diligently to try to save the patients they have infected. Studies show that about 80% of Americans are “highly concerned” about climate change, yet this percentage drops to less than 20% when the issue is combined with what it will cost to actually deal with these changes.

Regarding our inability to reason about dynamic systems:

One of the reasons the consequences were not imagined is that our human commonsense tends to think of “stability” as something static, whereas in systems it is a dynamic process that can be fragile to modest changes. One way to imagine “stability” is to take a bottle and turn it upside down. If it is gently poked, it will return to its “stable position”. But a slightly more forceful poke will topple it. It is still a system, but has moved into a new dynamic stability, one which will take much more work to restore than required to topple it.

On acting now instead of acquiring a perfect answer or solution:

When the costs of an imperfectly understood event are high or essentially irreversible, measures have to be taken even when perfect proofs are lacking. This idea is understood by most developed societies—and carried out in the form of levees and pumps, food and water stocks, etc.—but is nonetheless resisted by many of the voting public.

Perhaps the solution is to get ourselves representatives that excel at reasoning and legislation instead of politics and fundraising?

One of the reasons we are a republic with a democratic base is that the representatives can be selected to be “the best and the brightest” from the population as a whole (this was another early ideal for the great American experiment). We could argue that the current representatives are “all too representative”, but this is part of a slide in our political and social systems that needs to be shored up and improved. The idea of “national service” is now just a whisper, but it is what needs to be brought back into the forefront of what it means to be a citizen.

Why I blog in bursts

I write here in bursts. It confounds me as to what marks the beginning and end of those spikes. I have a few hunches:

  • ambitions grow larger than my free time: it’s easier to hit publish on a self-contained thought than a connected series or magnum-opus essay
  • intervention of life: work, vacation, various chores adults are expected to perform
  • self-distraction: acting as a novelty junky rather than pushing one thing through to completion
  • tweeting less: putting little thoughts into tweets means I’m driven to put slighly-not-little thoughts into blog posts
  • reading less: reading interesting things drives me to (attempt to) write interesting things
  • skipping record: I worry I’ve already had this thought and published it somewhere

Also sometimes I’m not quite sure how to end a thought like this and I wonder if I should worry about that and then I decide to let it slide.

How to approach a database-shaped problem

When it comes to caching and primary storage of an application’s data, developers are faced with a plethora of shiny tools. It’s easy to get caught up in how novel these tools are and get over enthusiastic about adopting them; I certainly have in the past! Sadly, this route often leads to pain. Databases, like programming languages, are best chosen carefully, rationally, and somewhat conservatively.

The thought process you want to go through is a lot like what former Gowalla colleague Brad Fults did at his new gig with OtherInbox. He needed to come up with a new way for them to store a mapping of emails. He didn’t jump on the database of the day, the system with the niftiest features, the one with the greatest scalability, or the one that would look best on his resume. Instead, he proceeded as follows:

  1. Describe the problem domain and narrow it down to two specific, actionable challenges
  2. Elaborate on the existing solution and its shortcomings
  3. Identify the possible databases to use and summarize their advantages and shortcomings
  4. Describe the new system and how it solves the specific challenges

Of course, what Brad wrote is post-hoc. He most likely did the first two steps in a matter of hours, took some days to evaluate each possible solution, decided which path to take, and then hacked out the system he later wrote about.

But more importantly, he cheated aggressively. He didn’t choose one database, he chose two! He identified a key unique attribute to his problem; he only needed a subset of his data to be relatively fresh. This gave him the luxury of choosing a cheaper, easier data store for the complete dataset.

In short: solve your problem, not the problem that fits the database, and cheat aggressively when you can.