I am not assuming anything, but you're still proving my point.

The original point was that alien life with intelligence would need something like the "industrial revolution", but now you're talking about Middle Eastern Neolithic farmers who migrated to Europe.

The point regarding Neolithic farmers, that is just based on intelligence, and understanding to work as a society. This can easily be achieved by other intelligent alien life.

Another thing that you keep assuming is that, people without better clothing, getting sick from curable illnesses, without simple technology that could make their lives easier, didn't create better clothing, medicine, simple technology because they didn't want to, as opposed to just not being able to (due to not having enough time).

Why didn't Zorg come up with Algebra? Because he didn't want to, or is it because he was too busy hunting and taking care of/protecting his family?

Also, you have to realize, that those who contribute to knowledge, are very few, especially in the beginning. There was 1 Isaac Newton out of millions at that time. There was 1 Galileo out of millions at that time. It would require 1 out of millions and perhaps more for Neanderthals since they weren't living in civilizations.

So, now that we have calculus, because 1 person came up with it, and now is being taught in colleges/universities all throughout the world... would you say that before Newton came up with calculus, let's say the ancient Greek or Egyptian civilizations, would you say that the ancient Egyptians, who used lots of math, just didn't "want" to come up with calculus? Or would you say that humans didn't have enough time yet for that 1 person to come up with calculus?

So, this is why when you say, "Neanderthals didn't want to do X", it doesn't make sense, when the reality was that they just didn't have enough time like Egyptians and calculus.