
This tweet of a professor’s extra credit offer is going viral, and you’ll understand why when you read it.

Major props for being awesome here, professor.
Though Selterman was surprised to hear of the tweet's popularity, he wasn't surprised by the class' results; more than 10 percent of the class selected the six-point option, rendering everyone extra credit-less. Only one time in Selterman's time using this exercise (which he borrowed from one of his college professors at Johns Hopkins University) did students take the selfless route.
"It's too big a temptation for some students to take the greater points option, and it seems to me like just a piece of human nature," Selterman said.
From the Twitter conversation, it looks like 20 percent of the students chose the six points. There were about 40 people in the class.
Game theory at its finest. Cruel. Brilliant, but cruel.
What would you choose?