On one hand, to be able to go from one direction in the sky to study such an object to another direction to study another object, and on the other hand to be able to maintain accurately the position in space. ↗
I did study the art of being a barber because I wanted to figure out what my routine would be. Do you start in the front or back? Top or bottom? Swivel the chair or walk around? What I did discover is there's no such thing as the perfect haircut! ↗
Whenever, at a party, I have been in the mood to study fools, I have always looked for a great beauty: they always gather round her like flies around a fruit stall. ↗