why does the NFL have a 2 minute warning?

To warn teams that there are 2 minutes remaining in regulation

Somewhat true Wikipedia answer , but the true answer was posted above

I’m just glad it’s not in college... it’s a super shite rule. We might have lost that auburn game if there was a 2 minute warning.

As recently as the 60s, the stadium clock was not official and was usually an analog clock. Official time was kept on a stop watch by one of the officials. Of course, there was no clock to warn the qb he was about to get a penalty for delay. (another interesting piece of trivia - the coin toss was not conducted on the field. It happened under the stands about 10 minutes before the game).

To let the Saints know they’re about to get fricked again