Question

Earlier people used body parts to measure length.why it is not considered as accurate way?

Answer 1

Answer:

Because people didn't know the exact length of that body part too and every person has different lengths of their body and body parts

Answer 2

every person is different from other and so are their body shapes when they are using their body shapes to measure something it might not be same for somebody else like a hand span of a child is much smaller than a hand span of an adult and evenin adults some others hands man might be too large while some might be very small hence they should be a better unit for measuring things not the body parts hope you get the answer if you don't please tell me and if you do rate me mark me whatever