Yes, evolution is a theory. Yes, there are blank spots, weaknesses, holes in it. However overall it's a useful tool to explain and delimit our surroundings.

I still remember spelunking, over 60 years ago, in Florida caves and finding, with delight, blind insects and blind fish.

I remember then, at University of Florida, in Gainesville, seeing blind cave fish in a professor's aquarium and learning that, in two or three generations, in a normal, not perpetually dark, environment, they regain their sight. That's 2 or 3 generations later, not the first generation born in a normal environment.

This seemed, to me, more like Lysenkoism than Darwin’s evolution. The explanation the professor gave was gene potential, however I still have a hard time wrapping my head around the concept that said gene potential needed at least a couple of generations to be triggered.

Another curious, in my opinion, evolutionary fact is shoulder blades. We all have them, humans, dogs, birds, alligators. It's quite logical we have them, descended from monkeys, shoulder blades are great for hanging and swinging around on tree limbs. One could say shoulder blades. scapulae, are specifically designed for hanging from limbs. However for walking on the ground, a pelvic girdle sitting atop legs is a better design so why don't four legged walkers, if they came first, have two pelvises?

Now if one wanted negate at least the Cambrian Explosion confusion and push back the DNA enigma; I modestly suggest rather than evolution, perhaps we devolved from a higher life form. Instead of Ontogeny recapitulates phylogeny, Phylogeny recapitulates ontogeny.

OK, assuming there was no pre-Cambrian life, just a warm ocean soup full of nutrients, a bipedal space creature, descended from some arboreal limb swinger, crashes, dies and is dissolved in the ocean soup leaving hundreds of millions bipedal DNA patterns floating therein. As said ocean soup is not a suitable environment for a surface walking, air breathing light sword swinging, etc., the first trilobite on earth is born instead and within it's germ plasm is, potentially, Buck Rogers waiting to be born when the environment is right!

Why yes, devolution would explain a lot and, once you factor in DNA degradation due to radiation, sublimation and reiteration, it's quite understandable why we ended up with Bernie Sanders, Hillary and Occasional Cortex (& a few posters herein that I'm far too kind to mention by name, of course.), instead of Buck Rodgers.