Blade relics of the past

Archaeologists believe that the first appearance of man on Earth occurred at least about 200,000 years ago, of which 140,000 years passed without a major shift in this man's lifestyle or any signs of steps indicating progress in his life. So what happened that led to a shift in man's ability to Thinking and innovation, such as creating stone tools and drawing on cave walls?!The human ability to think makes him different from other creatures, as these parts responsible for thinking are located in the outer cortex of the brain, and they, along with the memory centers in the brain, help us connect the past and the present and envision the future. The urgent question now is: Why did the individual not develop his memory biologically in the same manner as The primitive man or the orangutan, whom some scientists believe that memory developed biologically, or was man created and memory an essential part of him?!