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 p

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-freakonomics-radio-rebroadcast/ 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.