[cfadvan]

Many great ideas fail at first, and for a long time, because they’re massively ahead of their time. The helicopter, airplane, submarine, gun, and many more are fine examples. The submarine though has literally hundreds (or thousands if you stretch the definition) of years of abject failure before about a hundred years of resounding success.

https://en.m.wikipedia.org/wiki/History_of_submarines

That’s a long time to be essentially sending people to a watery grave (with a few limited successes) before materials and engineering technology caught up to the vision of submersibles.

[mirceal]

I would go and say that for most innovative things, the invention and the implementation are almost always 2 different phases (sometimes years or even decades apart).

Sometimes the technology for implementation is not there and sometimes people have a hard time grasping what they’re looking at, even if an implementation is done.