keep track of major areas of change in

• grasping hand
• the brain
  • size
  • structure
  • brain weight/body weight ratio
  • brain development
    • stereoscopic vision
    • language and speech development
• bipedal walking
• diet classifications / types
• tool use and manufacture
  • stone tool making
  • osteodontokeratics
• hunting and gathering / foraging
  • hunting
• food production
  • plant domestication and agriculture
  • animal domestication
• development of civilization
• art and ritual
• controversial theories

timelines of prehistory

• new discoveries
  
  
• first of things
• best of things
• last of things