In the Paleolithic times everyone was a hunter gatherer and people did not have a reliable food source. It was also very dangerous.
Then people started domesticating animals for food and . . .
Farming
The neolithic revolution happened from about 8,000 B.C.E. to around 3,000 B.C.E.
With a more reliable food source they could make more permanent civilizations but there had to be leaders and because of this there was a lot more inequality, poor people, and slaves.
Modern Day. . .some good things about the neolithic revolution is that we have more modern technology and we have a more reliable source of food.
There are many bad things also like deforestation, climate change, more diseases, more inequality and a lot more.