An interesting trend occurred to me when I found this timeline of technological advancement since the 1940's:https://www.timetoast.com/timelines/technological-advancements-from-1940s-to-date
We have the internet, cell phones, and kidney dialysis, but most vehicles still use fossil fuels and space travel is with rockets.
Smallpox was certified as eradicated in 1979.
The human genome project was completed in 2003.
Computers have advanced by leaps and bounds.
We should have bases on the moon, deep-space stations in orbit, and colonies on Mars by now.
My impression is that we are being deliberately held to a limited technological level in the fields of energy and propulsion.
Physics and astronomy have become grossly over-complicated to point that no one understands anything.
I believe that advances were made, and subsequently suppressed, forcing these fields of science into a perpetual
cycle of theorizing, never knowing that many things said to be incorrect, actually are correct.