Well...I mean it's a logical conundrum because if you take the timeframe you can justify and double it, by definition you can't justify half of the time it will

Well...I mean it's a logical conundrum because if you take the timeframe you can justify and double it, by definition you can't justify half of the time it will take. On the other hand, a minimum amount of time required for a project seems to be well accepted by project managers and others.