Because there are no "proofs" in science.
Going back and forth again. So refute my facts, my interpretation whatever you call it. I have posted scientific facts. You cannot refute them. Science does not support evolution, it supports Intelligent Design. Evolutionists do not have a single example of a mutation that has made an organism more complex. Evolution does not have a single clear example of a species that has evolved into a more complex species. Evolution does not even have a single clear idea of how evolution could have arisen. Evolution cannot even describe how complex functions could have arisen gradually. Evolution cannot explain the species I have posted in the article. Materialism cannot explain how an ordered Universe, how life could have arisen at random. In other words Junior, what you and your evolutionist/materialistic/atheist friends have to support your theory is just a big fat ZERO.
Where? A scientific "fact" is that some bacteria have flagella. Your "fact" is that it is impossible for the flagella to have arisen naturally -- that is not a fact, that is a conclusion based upon your own belief that it is impossible. Indeed, others on these threads have shown you one or more possible scenarios of how the flagella arose naturally, but as you are incapable of understanding anything written above a fifth-grade level the explanations went right by you and you continued to spout the same "I've disproven evolution all by myself" drivel for which you have become so famous.