Question

Which is true?
Some important ideas about science are very old.
All important ideas about science are new.
Ideas about science are outdated after 100 years.
Scientists only use their own ideas.

Answer 1

Hmm, this is a puzzler. Let's think about it.

What about gravity, would you say that is an important idea? Newton proposed his theory of gravity about 300 years ago. He built on ideas of Kepler's which were published about 400 years ago.