On: Richard Feynman's blackboard at the time of his death (1988)

[bitshiftfaced]

It doesn't strike me as likely that Feynman would have written this with sarcasm behind it. Maybe someone knows the details better. Personally, I think it looks more like the sort of goal that you aim for even it's not literally possible. "Shoot for the moon. Even if you miss, you'll land among the stars."

[yunwal → bitshiftfaced]

dhosek was being sarcastic, not Feynman

[danielmarkbruce → yunwal]

Neither of them were. The quote is saying "practice solving problems on solved problems as much as you can" and dhosek is saying "good idea".