> If the local food sources are depleted you simply move on to someplace better. Counterpoint: "someplace better" might already be occupied by other humans. Be

> If the local food sources are depleted you simply move on to someplace better. Counterpoint: "someplace better" might already be occupied by other humans. Besides, a harsh winter is not a local phenomenon, it affects entire regions. Good luck getting to "someplace better" if you're starving, don't have any transportation besides your feet, and don't even know where "someplace better" even is.