Do you inflate your estimated project completion dates? [closed]

If so why? How much?

I tend to inflate mine a little because I can be overly optimistic.


Hofstadter's Law: Any computing project will take twice as long as you think it will — even when you take into account Hofstadter's Law.


If you inflate your estimate based on past experiences to try and compensate for your inherent optimism, then you aren't inflating. You are trying to provide an accurate estimate. If however you inflate so that you will always have fluff time, that's not so good.