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by kleer001 3803 days ago
Absolutely correct.

Sunk costs can be a bankrupting, nation destroying, and species extincting level cognitive error. Sometimes it is best to quit.

Here's a podcast that goes into more detail:

http://freakonomics.com/2014/05/29/the-upside-of-quitting-a-...

The takeaway is that the quicker you quit the faster you can get on to something you can win at.