Evolution

So, from the very roots of life, when DNA, etc....did not exist, evolution managed to build everything up to what we are now, with our various devices to do various different things? I'm sorry, but that makes very little sense to me. There are some very obvious examples in the world today of things that just do not work in parts. The most-quoted one: the eye. There's a minor argument about light-sensitive patches to detect light....but the arguments stop there. the minimum mechanism required to detect the direction of light is rather complicated, involving either lenses, or multiple light-sensitive patches that only work in one direction. Neither of these could evolve gradually, step-by-step, they would have to be the result of a catastrophic mutation. Even assuming DNA is there to help evolution progress, the sheer number of alleles that would make up such a system would not move as a group without the same thing happening to either a lot of members of the species at once, or with the same extremely unlikely even occurring many many times. In this time, many other, simpler mutations could have occurred in different groups of the species, splitting off into other species, without evolving this directional proto-eye first. So why do we see almost every living creature today with exactly the same system built-in? It's not simple to evolve, it's purpose could be replicated in several ways, (bats do a wonderful job, for example....but still have eyes.) Other examples of things that aren't evolvable step-by-step, are Camouflage: If you see something which is vaguely the same colour as its background, you can still pick it out without difficulty, so why does having partial camouflage help in survival? Also, the human kneecap. It protects the joint, yes, but what help would a small sliver of bone be, that caused it to evolve? Further problems with evolution as a method of explaining life include how it started the process. Evolution as we know it is fundamentally based on the DNA code....so where did the DNA code come from? And when did cells start to recreate what was written in the code, and why? Fundamentally, If I can find one thing that cannot be explained by evolution, then it cannot be the process whereby all life evolved. The most obvious one is the evolution from reptiles to mammals. In this particular case, what on earth moved eggs to internal, live birth?? Other odd creatures that make no sense as only part of them are: The angler fish. It has both a light and a 'bait' that it uses to lure fish into reach of its mouth. without the light, the bait is useless, without the bait, the light merely scares fish away. The incubator bird. It uses either volcanic heat, solar heat, or the heat from rotting compost to warm its eggs. How do you evolve that? It can tell whether a nest is suitable or not whether it is 3 ft underground, or 50 ft across, and extending up to 10 ft above ground. The male can then keep the temperature of the nest at 91 F, using its beak as a thermometer. How did that evolve? It would have been useless unless its eggs needed a specific temperature, and then if its eggs needed a specific temperature, they would have died before evolution could give the bird a thermometer. Then, even more amazingly, the babies hatch fully formed, and dig their way out. How does the instinct to dig appear?? If it was necessary, they'd probably die. Lastly, The Bombardier beetle. It has a defence mechanism involving firing boiling-hot noxious fumes out of two tubes at its attacker. It does this by mixing hydrogen peroxide and hydroquinone, with an inhibitor chemical. It then squirts two catalysts at the mix, making it explode at will. Tell me, which part of this system could have evolved step-by-step?