I notice quite a lot of people on bikes, usually those ambling along the pavement or right on the edge of the road, that seem to insist on riding in the small-small gear all the time. I know sometimes you may find yourself in that gear for a moment, but I'm talking about those who ride in it all the time, usually accompanied by a whole range of noises from the transmission. I saw one guy on a fast-looking road bike riding in this gear, constantly looking at his chain wondering he was struggling to get up the hill he was on.
This seems to be the default gear until people learn to shift properly. The question is, why? I would have thought if you didn't understand how the gears worked, you'd put everything in the middle position.