Why was Mario created when there were already other platform games out there?
In the early 1980s, there weren't other scrolling platform games. As far as I can tell, SMB1 was the first game to use scrolling instead of a Donkey Kong-style single screen or Pitfall!-style page flipping.
Sorry mate, you've forgotten Namco's Pac Land But SMB was pretty darn close.
No laboratory experiments can be performed with regard to human action.
One of the most profoundly stupid statements ever uttered by an economist. Sure you can't stick the global economy in a beaker and have controls and the other paraphernalia of controlled lab tests, the highest standard of science. But you can experiment with human action at the individual or small group in a controlled lab. It's routinely done these days. There is such a thing as experimental verification and falsification.
And because it's now "routinely done" that somehow makes his statement, however so long ago, "stupid." During that time I'm sure it wasn't routinely done, if done at all, so it probably felt a lot less "stupid" of a statement when he made it. This statement was also coming into formation as an idea of Mises in the wake of a wildly turbulent economic collapse known as the Great Depression, and the unpredictability that would lead to the Cold War. The context of the statement provides further explanation as to its meaning. To simply flaunt this one statement as being "stupid" because of 50+ years of advancement into social science that wasn't available at the time he made it, I would argue is a far more "stupid" assertion.
A bug in the code is worth two in the documentation.