This is as bad as it can get. But don't bet on it. A little inaccuracy sometimes saves a ton of explanation. Change is inevitable, except from a vending machine. There is absolutely no substitute for genuine lack of preparation.
Indecision is the key to flexibility.
Things are more like they are now than they've ever been before. D. Eisenhower Someone who thinks logically is a nice contrast to the real world. Never wrestle with a pig. You both get dirty and the pig likes it.