u/F1st4nc3YT

I've been trying to find explanations of this but I'm struggling to. Essentially, I'm wanting to find the name of the effect where when seeing someone accomplish something that was deemed really difficult or impossible, it makes it easier for others to accomplish it as well. For example, the first recorded instance of someone climbing Mount Everest is on May 29th, 1953, with Tenzing Norgay and Edmund Hillary. It had been attempted many times before, but that was the first documented successful climb. By that same time of year in 1956, just 3 years later, that count had gone from 2 people to 6. And by 1965, that number was up to 23. There are obviously equipment improvements in that time, making it easier and safer to climb, but there also exists that psychological effect which is what I'm trying to uncover. Can anyone help with the name of this? It is a really fascinating concept to me, and I'm trying to get a script wrote about it.