so

if 1000 earths were formed at the same time, and everyone of them had life

and everyone of them had humans like we did, say 100,000 years ago

in 2025, would all 1000 earths be in the same place, ie.. same inventions etc

would electricity have been invented on all 1000 earths be, even if it was at different times

no

i dont just mean electricity, i mean cars, clothes, medicine, everything

even if not at the same time, but eventually

3 hours ago, thomasmark71 said:

everyone of them had life

Moved from Science News to Evolution.

Each world would be different. Differing pressures on all species would change the life on each planet. Some worlds might lose their humans during the Ice Age, some might still have terror birds and sabre-tooths to deal with, still others would be in the path of a differing amount of huge meteors. It's almost guaranteed some of these worlds would evolve something we've never seen on this Earth.

And always there is innovation with humans. Some of those worlds that made it to a certain technology level may have decided the air and water are too valuable to all life to mess around with, and invested instead in cleaner ways to do everything. Imagine what could be if a wealthy energy industry wasn't constantly trying to smother innovative competition!

From your first premise, your second one (that human exist) would already be very unlikely. If we assume that we have 1000 worlds starting with the exact state as Earth 100,000 years ago the likelihood increases as by then there was substantial human population. But there are so many random trajectories that it is incredibly unlikely to get the same multiple times. It is more likely to throw a billion cards in the air a thousand times and they landing down exactly the same way every time.

Edit: I don't think that this is a question related to evolution.

Seems to be more germane to chaos theory. Lots of ways that butterfly can flap its wings.

Electricity wasn't invented. It was discovered. Ways to tap electrical energy were invented.

I concur with @CharonY .

There are laws (patterns of evolution), initial conditions (how things get started to a limited precision), and historical contingencies.

Not even in physical dynamics do we have same behaviour for very close initial conditions on a system that can be simply formulated in terms of few parameters. Imagine how different life could have been with a different panoply of astrophysical contingencies (close-by supernovae, asteroid collisions, etc) to name but one type of contingencies. There are also molecular, geophysical, atmospheric, (etc) contingencies that boggle the mind.

So no.

Moved to Other Sciences.

On 4/16/2025 at 2:30 PM, thomasmark71 said:

so

if 1000 earths were formed at the same time, and everyone of them had life

and everyone of them had humans like we did, say 100,000 years ago

in 2025, would all 1000 earths be in the same place, ie.. same inventions etc

would electricity have been invented on all 1000 earths be, even if it was at different times

I have no degrees in anything but here is my opinion on this:

Its chance. I would like to introduce sports into the answer.

Tom Brady for example. He was a backup for his team when the starting quarterback got injured. The chances of Tom Brady having the career he did if he never got that starting role by his teammate getting injured is considerably lower. In other words, backups who never get the opportunity to showcase their skill-set in a live game often just get overlooked and eventually replaced.

We can use that example in a lot of things. A meteor strike, a car accident, a solar eclipse, etc etc. For every action, there is a reaction, so we play the game of "chance".

Lets say "input any famous scientist" parents never met due to some foreseen accident, would their scientific breakthroughs eventually be learned? quite possibly, but that time difference of if and when it did would have a great impact on the future compared to the other planets in your model.

3 hours ago, taste said:

Lets say "input any famous scientist" parents never met due to some foreseen accident, would their scientific breakthroughs eventually be learned? quite possibly, but that time difference of if and when it did would have a great impact on the future compared to the other planets in your model.

True, but their discoveries would likely still happen, though perhaps later. Scientific work is usually happening among multiple people. People other than Einstein were working on relativity, for example.

13 hours ago, taste said:

I have no degrees in anything but here is my opinion on this:

Its chance. I would like to introduce sports into the answer.

Tom Brady for example. He was a backup for his team when the starting quarterback got injured. The chances of Tom Brady having the career he did if he never got that starting role by his teammate getting injured is considerably lower. In other words, backups who never get the opportunity to showcase their skill-set in a live game often just get overlooked and eventually replaced.

We can use that example in a lot of things. A meteor strike, a car accident, a solar eclipse, etc etc. For every action, there is a reaction, so we play the game of "chance".

Lets say "input any famous scientist" parents never met due to some foreseen accident, would their scientific breakthroughs eventually be learned? quite possibly, but that time difference of if and when it did would have a great impact on the future compared to the other planets in your model.

The thing is, all this happened on the Earth we all share and can observe relative to each other; all those other Earth's may well exist, but we can't perceive them.

Hindsight is the only exact science, but we keep trying to use it to be more clairvoyant, which is a mistake however intriguing. 😉

In imaginary scenarios, impossibilities are always possible.

And this is, then, a useless thought experiment.