Homo habilis: "I figure I'm about to use this here stone to make tools and choppers." OtherHomo habilis: "Sounds good to me, we could really use some more technology to make life easier."
Homo habilis: "We need to catch this here reindeer once we hunt it down I figure we can hold a group gathering for feasting." Other Homo habilis: "Ok man, sounds good to me."
Homo erectus: "Hey boy I just created a tool to help catch fish its called a fish hook and rod. I figure later we can all have a gathering." Other Homo erectus: " Sounds good, but look I just created an ax I figure I will cut down a tree before then."
Homo erectus: "Hey girl looks what I just made using my flint knife cutting skills. I think I'm gonna call it a bow. I figure I will hunt that sheep in a minute." Homo erectus Girl: "Wow!"
Homo Sapien: "Yo, look at this fire I created using my flint knife. I just cut down this tree using my ax." Other Homo Sapien: That's crazy I figure we go and hunt some whitetail deer."
Homo Sapien: " Wow, this farming stuff is working out good. I figure once I collect all this good corn we can gather and have a feast."