[danaris]

The Wright Brothers flew at Kitty Hawk in 1900. [0]

The Bernoulli Equation, which gave us the basic understanding of how lift can be generated with an airfoil, was developed in the mid-1700s. [1]

We don't have any fundamental understanding today of how an AGI could be built. We have a bunch of interesting ideas, with varying degrees of evidence for them, but we don't have the same kind of solidly-established scientific foundation for understanding intelligence and the human brain today that we did for understanding lift in 1900.

"Some people didn't understand the science, and so called it fiction" isn't a very strong argument.

[0] https://en.wikipedia.org/wiki/Wright_brothers#Flights

[1] https://en.wikipedia.org/wiki/Bernoulli%27s_principle

[digging]

Human flight was science fiction before Bernoulli. See: Icarus, Abbas ibn Firnas, Leonardo da Vinci.

[danaris]

But Bernoulli proved the scientific foundation of it well over a century before anyone actually did it.

No one has provided us with an ironclad scientific foundation for AGI. Some people keep declaring very firmly that it must logically be possible, but even if there are no gaps in your logic whatsoever, that's not the same thing as providing equations for how it would work.