So here is the rub... what you are saying is technically correct for today, but ignores the fact that there are definitely maths and technologies we can't even comprehend yet.

Humans today will be cavemen compared to Human intelligence in 100,000 years.

The real problem is getting us to survive that long as a species. EVERYTHING is trying to stop us.

Our main goal right now should be to spread out in the galaxy and universe.

Yeah I agree humans will be lucky to survive the next 10,000 years, maybe even just the next 1,000.

I definitely feel like if there were aliens that could find Earth today, and have the technology to travel here or communicate with us, that we would be probably too dumb to understand them or communicate with them.

This would be such a major advancement forward for our species it would drastically alter our daily lives, no way that stays secret.

We are just now really scratching the surface of what there is to learn in the universe. The vast majority of our knowledge was only discovered in the past few thousand years, imagine what that will be like in even 100 years.

We only invented the transistor around 70 years ago, look where that got us in a relatively short span of time.... we now carry around magic boxes that give us 24/7 electronic access to the entirely of human knowledge.

Knowing that technology won't stand still, what's the next thing that will blow people's minds?

Are you sure about that?

https://people.howstuffworks.com/philadelphia-experiment.htm

I think you would be surprised what is possible with time and elbow grease. They didn't have a whole lot to do back then.

I think that physics and mechanical advantage can be amazing, and can be something even "cavemen" figured out.

The people who built the pyramids weren't dumb cavemen either.

Check out what this guy worked out as far as using physics to his advantage.

Why exactly couldn't we build a pyramid today?

We put humans on the moon, and you don't think we could make perfectly dimensioned stones?

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If there were past civilizations on Earth with technology like anti-gravity, how screwed are we?

If they had technology like that and all that is left of them are some pyramids and corpses, we are absolutely effing screwed.

Probably bitching about having last year's plumbus. They need to upgrade to plumbus X.

For real.

Is he bringing people home that you don't see leave? Maybe he is eating them. No trash because he incinerates the remains.

It's always the quiet ones.

Yeah, that's a cool experience that you shared with your friend. It's the definition of a UFO.