things that take tremendous concentration

1.) feats of daring, dexterity, and skill
2.) insincerity
3.) understanding what someone is saying to you in french
4.) comprehending higher math
5.) not losing oneself in an eddy
6.) reaching a key that is just out of reach when you're locked in a jail cell and the warden is sleeping, but stirring
7.) not telling a rude customer what you really think of him or her
8.) not looking as you drive past an accident



photo found on ffffound.