> I don’t know, should it be special to be able to explain things?
Given that so few people can explain something, yes. The problem is that explaining requires a very deep understanding which so few people attain. This Feynman story sums it up perfectly[1]:
Once, I [David Goodstein] said to him, "Dick, explain to me, so that I can understand it, why spin one-half particles obey Fermi-Dirac statistics." Sizing up his audience perfectly, Feynman said, "I'll prepare a freshman lecture on it." But he came back a few days later to say, "I couldn't do it. I couldn't reduce it to the freshman level. That means we don't really understand it."
Given that so few people can explain something, yes. The problem is that explaining requires a very deep understanding which so few people attain. This Feynman story sums it up perfectly[1]:
Once, I [David Goodstein] said to him, "Dick, explain to me, so that I can understand it, why spin one-half particles obey Fermi-Dirac statistics." Sizing up his audience perfectly, Feynman said, "I'll prepare a freshman lecture on it." But he came back a few days later to say, "I couldn't do it. I couldn't reduce it to the freshman level. That means we don't really understand it."
[1] https://www.quora.com/What-did-Richard-Feynman-mean-when-he-...