Monday, April 26, 2010

Invasion of the possibly useful jargon

Every time I take a class, I semi-consciously pick up its jargon and use it for all kinds of unrelated things. I'm aware that this is very common among nerds/hackers -- after all, I hang out with lots of them. I, too, speak of "pinging" people in real life, and of the "failure modes" of couches and suchlike. But because I'm a biologist hanging out with mostly non-biologists, it stands out a lot more because everyone else isn't using jargon from their biochemistry classes. I don't know many other people who use words like "inhibit" and "saturation" and "depletion" and "steady state" and "modularity" on a daily-to-hourly basis. (OK, maybe the last two are more widespread than I think, and I just need to hang out with more MechE or EE people.)

The most recent one is "timescale", or "on the timescale of". I picked this one up from my biomechanics class, which analyzes bio-materials of all different sizes from single molecules to whole organs. In order to keep ourselves sane, we have to take into account the size of the object in question when choosing an analysis method. Should we speak of the stresses and strains in a rod made of continuous material, or of the entropy-driven behavior of a randomly meandering chain? Can we ignore thermal motion of molecules, or the transient behavior when you begin applying force? It all depends on the length scale.

I find the word "timescale" very useful in my daily life. It's much easier to say exactly what I mean if I say "on the timescale of weeks" rather than "in the medium-term". I would love to say that it helps other people understand, as well, but unfortunately no one else seems to have picked up on it yet, so I will have to wait and see.

Strangely enough, the jargon-adapting habit seems to be largely involuntary. However, the success or failure of a given word is definitely related to its usefulness, to the usefulness of the metaphor. There's not that much difference between a feedback system in a cafeteria and a piece of complex software, so it makes sense to speak of both of them as having "failure modes". I guess this is what the "seeing-as" theory of intelligence is all about. (Something I read in one of Hofstadter's books... I don't remember which it was, and I don't know what this is all about.)

Addendum: jargon-adapting is also not particularly widespread among people who aren't part of hacker or twinkie social circles. Or, at least, I don't encounter it very much, and I often get laughed at (in a kind way) when I'm hanging out with my friends from Bioengineering and I speak of rainwater "saturating" a drain, thus forming a puddle.

Monday, April 19, 2010

Exhaustion

This semester, I've been mentoring a team of two freshmen working on designing a cooperative system of biofuel-producing algae and nutrient-recycling bacteria. It's a really neat project -- in fact all three of this year's 20.20 projects are really interesting. They have more of a focus on system dynamics / population engineering, where my year we focused on devices. I think this may be due to having Ron Weiss instead of Drew Endy. (Another indication of Weissitude is that we're all modeling our systems in MATLAB... sigh. I am not fond of MATLAB.)

I don't actually know much about biofuels, synthetic cooperation, or complex metabolism. I also don't know much about mentoring a team in the sort of hands-on, hands-off style that's appropriate when the point is for everyone to learn and stretch themselves. So it's a challenge, but an extremely satisfying one. I have watched my team drink the synthetic biology Kool-aid in the most remarkable way. There was a palpable transition from naivete to relative understanding;

Mentorship is important, but providing it at this level is also exhausting. Every day after class I feel physically tired (actually, that may have more to do with my sleep schedule than my mentoring schedule).

Monday, April 5, 2010

Gaze Direction, or How Your RSI Prevention Software Can Distract Other People Too

The other day I noticed something funny happening. To set the scene, recall that humans are wired to detect other humans' gaze direction as a method of figuring out where the important stuff is happening at the moment. Robots are working on this too.

For the last several months I've been having problems with eye strain after using my computer for too long at a time, so I've been using RSI prevention software to remind me to look away from the screen every so often. (I use TimeOut (review here) because it doesn't reset its timer if you leave the mouse alone for 10 seconds while you're reading something.)

When anyone else is in the room and I look up from my laptop to stare fixedly at the opposite wall, about half the time they will look up too, wondering just what is so interesting about that light fixture or Periodic Table poster. It usually takes them several seconds to figure out that I'm not actually looking at anything in particular... we're just so used to thinking of gaze direction changes as highly meaningful.

Of course, this indicates to me that almost everyone I know needs to look away from their screens more often. Do it right now (seriously, I don't mind waiting) ...................................................................
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you'll be surprised how your eyes feel when they refocus.