"Failure by Omission" is the idea that family, friends, and loved ones around an entrepreneur have a responsibility to give constructive feedback; otherwise, if that entrepreneur fails, they too have failed by having slowed his failure or avoided giving him feedback in order to "not hurt his feelings."
This applies additionally to entrepreneurs, who have an obligation to seek constructive feedback from everyone they can, to push beyond short-worded platitudes ("Oh, we love what you're doing!") to help their startup fail faster.
Originally presented at Failcon Zurich - April 16th. 2013