They are shown because they are the most commonly utilized in various In part#of this article I will give an example of how to put modern periodization to
a short answer: science needs both
I shall not attempt to match the depth or eloquence of RouletteRog or Tomf_22033 on this matter. If they keep going any longer, I shall invite them both to contribute chapters to a book on the philosophy of science. Congratulations to both of you.
Let me try to boil it down to 20 words.
Science is built on both fact and theory. Theory without fact is idle speculation.
Facts without are meaningless trivia.