Goto Considered Harmful

In 1978, Berkeley scientists did a study on the effects of GoTo on rats. Twenty rats in a control group were fed a normal diet, while twenty other rats were forced to program in Apple BASIC. Their health was to be monitored for a month, but after two weeks all of the rats in the programming group had melted into a dense goo that tasted a little like quiche.

But some rats learned to execute GOTO END_OF_MAZE, and finished in record time, while the nested block rats took too long to climb into and out of nested boxes to get to the end.

monads are literally just goto