If three individuals are coming over for dinner, does that stress you out?
What if it’s 17?
In case you’re giving a chat explaining your technique to 4 folks, does it really feel like a high-risk occasion? What if it’s 54?
What number of extra individuals are required earlier than it flips to demanding? As a result of the final individual is only one individual.
In case you’re performing in an auditorium, there are nonetheless solely thirty folks you’ll be able to see from the stage.
N + 1 is simply 1 extra.