we should bring the plants home so we don't have to travel to get food
i'll give you this banana for that apple
During the paleolithic times people where nomads women had to travel far away from home to find food. Men tried to hunt but the animals ran away, most berries where poisonous and there was so little food that the children where dying, and some animals attacked the nomads while they tried to hunt, life was crazy and dangerous.
Then on the way home one day someone had an idea so they got a couple plants and brought them home and replanted the plants to see what would happen, this was a big revolution for the nomads.
The nomad's idea had worked. Before they knew it they had a surplus of food, lots of animals, and people no longer had to wander far from home to find food and the population grew because children had food and weren't dying of starvation, people also traded foods so everyone was happy and life was now good.