As I think I've mentioned a couple of times, I work only about 4.25 miles from home, which is awesomely convenient for biking, except for the constant problem of flat tires. Of the 4.25 miles, about 2.5 is a collection of loose glass, which is why two years ago I bought Gatorskin tires, which are essentially steel-belted radials. But those tires have clearly been worn out, because I've had three flats in three weeks.

Last night I brought the bike in to get a new set of tires, leaving it in the shop and leaving me with no way to get to work aside from the subway. I don't like the subway all that much.

So I decided to walk. Again: 4.25 miles. It's just not that far. I'd done it once before and timed my trip at about 75 - 80 minutes, which is only 10 to 20 minutes longer than the train takes, assuming there are no breakdowns on the tracks. And there are always breakdowns on the tracks.

You would think I'd flapped my arms and flown to work judging by the reaction. Seriously, doesn't anybody walk any more?