[palata]

> One is an idea for which there is no ground to base it on, the other is an existing thing which can be recreated. Quite the difference.

Really? For all we know, maybe next year someone discovers fundamentally new laws of physics that enable cold fusion, and we will never have autonomous vehicles.

You can say that you like the other guess better than mine, but you should still realize that it is just that: a guess. Wanna see guesses that turned out to be completely wrong? Just check what companies like McKinsey predicted 10 years ago. They just have no clue, but somehow made a business out of it.