it sounds like what you are saying is the first estimate is the optimist in us, and until it seems 'funny' that it should take so long, you are giving it a test

it sounds like what you are saying is the first estimate is the optimist in us, and until it seems 'funny' that it should take so long, you are giving it a test against the pessimist in you. as entrepreneurs, and creators we probably always 'believe' that something is doable, hence the optimism.