Look at the diagram showing the positive feedback mechanism on page 13. Can you list the inputs that went tool making? What were the processes that were strengthened by tool making ?

Answer

The inputs that helped in making tools:
(i) Bipedalism which led to freeing of hands.
(ii) Large brain size and increased capability

The processes that were strengthened by tool making were:

(i)The capability and mental capacity of men.
(ii)Tool making strengthened man’s technical skills.
(iii) Created conditions from the transition from scavenging to hunting.
(iv)Introduction of punch blade technique to make small chisel.
(v)Tools helped the primitive man in farming, development of agriculture and to lead a settled instead of nomadic life.