Evolution/natural selection has as IQ (Intelligence Quotient) of about 1. It can design amazing things using only blind trial and error followed by pruning bad designs with natural selection. (no planning. No foresight). Theists imagine this has to happen overnight. It is i n c r e d i b l y slow. It takes millions of years. Even if you watch a movie of it speeded up tens of thousands of times, nothing would appear to be happening.
Evolution is not speculation. It is observed fact. We watch evolution every day in the lab and in the field. It happens most rapidly as viruses and bacteria evolve immunity to medications. Theists stupidly claim only a god could produce the same results of evolution, denying the observed results of evolution. They have refused to keep up with the science of the last 100 years. They are still pretending science has learned nothing since Darwin. We have even learned to mimic the chemical trick using DNA (Deoxyribonucleic Acid) that evolution uses.
See Evolving: The Human Effect and Why It Matters by Dr. Daniel J. Fairbanks for details~ Roedy (1948-02-04 age:70)