This Primitive Man Is Not Primitive

I traveled back in time again, this time to the primitive Stone Age with a proficiency system. What can my proficiency system do? Can Dzi beads be polished by polishing stones with it? So do they understand what I said? Emma, ​​I have underestimated you. The intelligence of humans in the Stone Age is almost the same as that of modern humans. The only difference is the accumulation of knowledge. So what is the basis for conquering this era? Force? Firepower? Or capital? So what do you expect me to do?