I would think that it would have been more gradual than that. Some people in the community probably started growing the plants that they usually went out and ga

I would think that it would have been more gradual than that. Some people in the community probably started growing the plants that they usually went out and gathered, since it was easier. Maybe during a time when they weren't moving as much. Or maybe they migrated between different areas depending on the season, so they planted, say, berries at all the different sites. I think it would have started more like that. Then because there was more food available from this, more people started doing it, and eventually it won out over migrating all the time or even staying in one place and hunting and gathering.