How often your task estimates end up being accurate?View other answers to this thread
I think this is related to the experience, I mean the more one contributes to projects the more his time management is improved.
Yep, can't argue with that. Though that's mostly for tasks that are somewhat related to what you already created / modified yourself. Those can be estimated with a larger confidence. Unlike the other type of tasks when you're supposed to do something you've never done before.