[dieselgate]

> 90% of the code is 90% of the work. The last 10% of the code is the other 90% of the work.

Don't think I've heard that one but certainly rings true to my experience.

Reminds me of "ninety percent of the game is half mental"

[radley]

I've heard it as "once you think you're 90% done, you're really halfway done."

Tangential: it's always made me wonder about teams that believe "80% effort" is optimal.