When you're at a comedy club, if you're not funny, you don't work. People will let you know, whether it's by booing or yelling for you to get out of the club. People are drunk or whatever and they'll let you have it.
It so happens that the work which is likely to be our most durable monument, and to convey some knowledge of us to the most remote posterity, is a work of bare utility; not a shrine, not a fortress, not a palace, but a bridge.