Some things are just unconscious knowledge:

1)The left side of the escalator is for people who want to walk up the escalators, the right side is for people who don't want to walk up them. This mans that if you're on the left, you should not stand there and gossip with your friend about the what happened the previous weekend, read the latest issue of Cosmo, or stand there in thought mulling over J-Lo's divorce. This means that you are supposed to walk up them.

2)If you are at a lap-pool and you see a lane that has four people in it and another one, one that's at the same speed as the one your looking at, that has two people in it, go to the one with less people in it. Do not get in and make it five people. Do the math, people.

3)If you are doing laps in the lap pool, do not stop 1/4 of the way to the end and use that spot as the place to rest up. Swim, walk, doggy-paddle, drown, whatever. Just do not stand there and look surprised when people keep on bumping into you or giving you looks when you have to stop mid-swim to swim around them.