How about building one of the largest companies in the world? Would others be able to do that if they had that idea as a 19-year-old? Let's not reduce all his accomplishments to a single idea. Ideas don't matter, execution matters.
Given that nobody has so far, and given all the handwaving like yours, I think you all have answered my question.
Building a company with 1000 users is a success. A million is another success. A billion is hundreds of successes.
I'd argue the 1st million users is much harder than the 3rd billion.
- Well, I wouldn't say that... what else did he do other than relativity?
And for what it's worth, Einstein did a lot more than one thing. Off the top of my head, Einstein's annus mirabilis had 4 papers that were all major accomplishments, including the E=mc² equation popularly associated with him: https://en.wikipedia.org/wiki/Annus_Mirabilis_papers
His work on relativity came later. As did a fair bit of other work, that I'm less familiar with but that I could easily look up and provide sources for.
And that's the kind of list I'm looking for here. People have claimed that he has other successes. I'm asking what they are. I've now given you the kind of list I wanted for Einstein, and I've given it elsewhere in this discussion for Steve Jobs. So will you give me that list for Zuckerberg? Because as far as I know it has one thing on it: Facebook.