How walkable is your neighborhood?

5th and Colorado
I recently discovered (sadly, I don’t remember how) WalkScore.com, where you can enter your (or any) address and have a “walkability” score calculated for your neighborhood. They use Google Maps to find out how far it is to a long list of important services and amenities (grocery stores, libraries, schools, coffee shops, and the like), and you get points based on how close you are. There are some issues (and they’re very up front about them) with using straight line distance as a proxy for walkability, but it’s not a bad approximation and a good start. There’s also no way they can take into account your preferences for things like schools and restaurants; you’d get points for living next door to a McDonald’s, for example, even if you’d prefer to go a little farther to the nifty local burrito joint.

Our house here in Morris scores a 54 out of a 100, which is probably about as good as you’ll get outside of a dense urban area (the Sears Tower in Chicago scores a whopping 94, for example). Personally, I think Morris is about as walkable/bikable a place as one is likely to ever find: Flat, reasonably compact, and with good roads and (mostly) sidewalks. It’s clear that Google Maps is confused about some of the businesses here in Morris as some of their distances are broken and they don’t know that we have a coffee shop a few blocks away (they list one nearly 25 miles distant!).

In total, it’s a cool idea, and I wish that it was available in the UK as we’re preparing to spend a year in Colchester without a car, and it would be nice to have a similar service while we look at houses and flats.

For amusement check out the scores of Bill Gates’s home and Shrub’s ranch in Crawford. Real environmentalists, these guys :-).

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High school math = Teh Good

How science is done
Pharyngula has a nice discussion of report looking at the impact of high school math and science classes on performance in university science courses. The short version? Definitely take math, as that improves performance in all the sciences in the study (biology, chemistry, and physics). Taking science in high school tends to help performance in that science in college, but doesn’t help much in the other sciences.

They don’t say anything about computing (but, sadly, most high schools don’t offer much in the way of meaningful computer science courses), but my experience suggests that much the same is true there: A solid math background is a definite win. Have some programming experience can help, but it can also get in the way if you end up needing to unlearn a lot. And any advantage one has from prior programming experience tends to wash out within the first yer (sometimes the first semester), while some solid math background continues to be an advantage all through the major.

The error bars are pretty huge, which isn’t entirely surprising given the variable quality of both instructor and student (both in high school and university). It would be interesting to better understand what role the quality of the high school instruction plays in the correlations. Does, for example, a bad science class actually have the potential to hurt you later on?

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