Technology and discovery was going gangbusters through the 1930s. Most research was privately funded then. WWII happened and the bomb changed everything.
Since the US Government became the primary patron of scientific discovery, significant progress in physics in particular has been relatively stalled.
The notable exceptions were proving Einstein’s theory on the existence of gravity waves and the verification of the Higgs boson.
There is, today, one of the most protected facilities in the USG that houses Tesla’s ‘recovered’ documents in New Mexico. Extremely highly controlled access.
Einstein was once asked, “What is it like to be the most intelligent man in the world?”
His reply, “I don’t know, you’ll have to ask Nikola Tesla.”
Einstein even believed Heisenberg was more intelligent. His math pretty much saved quantum theory.
As for the speed of light being a limit, what we do know is that it works for building bombs and making nuclear power plants.
What may change is that a new branch of physics springs up along the lines of ‘dimensional physics’. The physics of spacetime and its properties.
I’ve never felt good about the notion of ‘dark matter’ to explain where all the missing matter in the Universe may be. I think we don’t know enough about spacetime and its properties - whether and how it can be folded, etc.
I know this - Tesla had likely solved the world energy problem before his money guy pulled the plug on him.
He was harvesting electrical energy from ‘the air’ and transmitting it either over the air or through the ground to a receiving station. He hinted that this electricity was only the tip of the sundae - that there was vastly more energy in ‘empty air’ than anybody could imagine.
It’s fun to think about, but entrenched interests and government’s role as an erector of barriers into new markets will keep any of this from our generation and the millenial generation.
The millenials are shaping up to be a pretty good generation. They are calling BS on the Boomers (aka ‘The Locust Generation), and the acquiescent X’ers that followed them.
Ernest Lawrence, a pure experimentalist... said, "Don't you worry about it -- the theorists will find a way to make them all the same." -- Alvarez by Luis Alvarez (page 184)