Sunk costs are investments you make you can’t recover. The temptation is to double down to prove you were right in the first place, but the logical course is to say that was then, this is now, let’s do the best investment now.  

Elon Musk has said he will never give up, but in truth he has, not on his goals, but on his approaches. 

What can we learn from this in our own ventures?  

Credits