A limit of progress level not a limit of ability.
Maybe, maybe not. I think reasonable inferences can be made. For example, the fact that we've never met a human from the future is highly suggestive that the ability to travel in time is beyond our abilities.
Monkey's yes, humans no. I feel that anything could be learned or at least explained to humans by someone who has it.
Again I go back to the IQ example. I don't believe that Stephen Hawking would find it possible to teach an individual of 100 IQ his more intricate theories no matter how much time he had to spend with them. They have totally different ceilings and no amount of time would mend the gap as diminishing marginal returns simply sets in at some point. I would also submit that the gulf between Stephen Hawking and a person with a 100 IQ is far less than the gulf between Stephen Hawking and an Old One with the "Technology" Portfolio.
Take any scholastic aptitude test for example. A person can better his scores through practice, but beyond a certain point there is no meaningful advancement. You just can't teach everyone to peg a 1600 on the SAT.
Even if we look at the collective contribution of human intellect there is a limit. There are synergies to working together to be sure but it's not as though a workforce of ten 100 IQ people will produce results equivalent to one with an IQ of 1000.
Wrong choice of words i was thinking about the D&D definition were sentience is interchangable with sapience. Sapience is what i was reffering to.
Gotcha.
I ain't refering to tech vs tech i am refering to the fact that his stuff can and has been used by others, and that he himself can be outmanuvered by lesser forces.
I thought this entire discussion was about tech by way of intelligence as a proxy.
Galactus' technology is so user friendly even a comparative insect like Reed Richards can use it. Just because someone can use it doesn't mean they could replicate it even by way of reverse engineering. Galactus has developed a plethora of technologies that Richards and humanity would have duplicated if he could. If Richards, and in particular Doom, could have replicated Galactus' technology they would have, believe me.
Thus he isn't so much smarter than humans like Reed and Doom to the point they could never understand or match his tech if he explained it to them.
I'm not sure what basis you have for concluding this. See U_K's post regarding Thanos' view of Galactus' technology.
I beleive he could even teach normal earth humans to use and replicate it given enough time.
There is a reason they don't let just anyone into places like Oxford. The run of the mill student might eventually graduate but you can give them here until eternity and they won't accomplish what the best and brightest will.
Changing gears a bit I'm going to refer to the Official Marvel Handbook from TSR circa 1980s.
Galactus has a reason score of Class 1000 translating to roughly 900 IQ. Richards is a 50 which translates to roughly 210 on the IQ chart. Richards has talents that would push his IQ to 75 or roughly 240 IQ in tech matters. This would make Richards perhaps the most intelligent human being in history but hugely inferior to Galactus.