I have made all manner of takeoff goofs. Most notably, while adapting to a new-to-me Citation CJ1, I found during the after-takeoff checks—gear up, flaps up, ignitions off, engine sync on, climb power set and so forth—that I needn’t put the flaps up. I had taken off without them. I need to look up the difference in runway length required for zero-flaps takeoff sometime. There might be a circumstance when one would choose to do that, but this wasn’t one of them.