That’s actually not correct, and the point of the simulations is to show that. By social distancing, you reduce the likelihood of everyone getting the disease. The use of social distancing brings the probability that everyone gets infected at some point closer to 0.0 but doesn’t make it 0.0. It’s possible to have a result where you either have people who were never infected, or ones who are fully recovered.

That’s what they’re driving at.