https://deutschefotothek.de/ews/ete?action=queryGallery&inde...
Unfortunately reality is also money (does your idea actually make money)
Edit: I also realize there is a difference in not knowing and enthusiasm too, a kid probably doesn't know about the thermo laws
If nothing else art/sci-fi sells
Whether we're post-truth or not, the "market it until you make it" is real, and the market can remain irrational longer than most expect.
He'd have done much better, post 2001.
Nothing wrong with imagination sure
It does, however, have to be testable.
But me equating money with reality well that's what keeps you alive/shelter unless you're self-sustaining somehow like a homesteader
edit: the other bit on reality, has to be reproducible against science
Personal annecdote too, before I became a developer I had all these crazy ideas/high traffic websites to make when I was younger. Later on I'm at that point where I can "make anything" (CRUD realm) but now I don't have that same blind ambition/energy anymore. Reality is like "will it make money?" I get joy is a driver too but yeah.
It makes me wonder how much of technology is driven by the need to look cool.
A few locomotives. The GG-1 is considered one of the best of the streamlined designs.[2] The driver visibility is terrible, for no good reason. Steam locomotives had a visibility problem because the boiler was in the way. This is an electric; the cab and driver can be anywhere.
The Juicero Press.
1960s Olivetti calculators.
All those comic and SF spaceships that had rocket propulsion out the back but somehow achieved level flight without wings. This guy liked that kind of vehicle. Doesn't work.
The Corliss Triumph steam engine.[1] Obsolete when built. There were other more compact steam engines of higher power at the same exhibition.
All of steampunk, of course.
[1] https://www.youtube.com/watch?v=z9_sLcgQ9LM
[2] https://en.wikipedia.org/wiki/Pennsylvania_Railroad_class_GG...
[3] https://energyhistory.yale.edu/william-dean-howells-describe...