Comment by mises

Can you add any sources for this? I see several that support OP's position from a cursory search.

https://en.wikipedia.org/wiki/Principle_of_least_effort

https://medium.com/the-mission/dont-use-rewards-for-motivati...

http://hepg.org/hel-home/issues/10_2/helarticle/the-case-aga...