The knack of flying is learning how to throw yourself at the ground and miss.

See first, think later, then test. 

But always see first. 

Otherwise, you will only see 

what you were expecting. 

Most scientists forget that.

The fact that we live at the bottom of a deep gravity well,

on the surface of a gas covered planet

going around a nuclear fireball 90 million miles away

and think this to be normal

is obviously some indication

of how skewed our perspective tends to be.