And even then I weaseled with "probably a sign".

Yes, I know there are times when it makes sense to code for a long time before running anything. I've done so myself. But I don't do so as a rule, and consider it a red flag if someone does do so as a rule.

I should also note that the programs where I've felt a need to develop that way have generally worked very well, but with a density of "interesting" that makes it very good that they do so.

Cheers,
Ben