Quote

"I do not know with what weapons World War III will be fought, but World War IV will be fought with sticks and stones". Albert Einstein.

What does this quote means? for me it means that wars slowly recedes human evolution and nuclear weapons ruin the earth's life.
Alhtough we haven't start World War III, we know that nuclear weapons will probably be used. this weapons ain't cool because not only do they kill almost every living thing, but they ruin the land with the radiation that i heard it takes THOUSANDS of years to dissolve. Ain't nobody got time for that!