Term

Sunk-cost fallacy

The tendency to stick with something only because a lot of time, money or effort has already gone into it, even when stopping would be wiser.

Think Like a Rocket Scientist: The Workbook, Ozan Varol

Explained in

• Think Like a Rocket Scientist: The Workbook, Ozan Varol
• The Art of Thinking Clearly, Rolf Dobelli

  The tendency to continue because of money, time, or effort already invested, even though it cannot be recovered whichever decision is made.

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