the answer is hands
Experiance of a human being from child to death.
Riddle: I have two arms, but fingers I have none. I've got two feet, but I cannot run. I carry well, but I carry best with my feet off the ground. What am I?
Two have four, but four have six.
Some work broken, some must fix.
Cold then hot, or hot then cold.
Twice made silver. Once in gold.
A simple object most men own.
Now made of plastic but designed in bone.
What is it?