Conversation

The Art of the Conspiracy Theory - new Ribbonfarm by me

Replying to

read-eval-print-loop, wherein you re-run and refine a program on a language console until it gives the desired results

Replying to

and

including, often, persistent effects on the REPL's environment en.wikipedia.org/wiki/REPL

Replying to

and

as opposed the experiment, which is, ideally, stateless and reproducible when rerun