[DoreenMichele]

Thinking in public allows your ideas to be polished if:

1. You have a thick skin.

2. Expect "polishing" to involve friction and are okay with everyone rubbing you the wrong way.

3. Can take a critical eye to the difference between presentation and substance, among other things.

Thinking in private is, no doubt, unique to each individual. One of the cons: We tend to do a poor job of finding our own blind spots and biases.