Because it is highly improbable that multiple seperate origins would all have the same 4 amino acids in their DNA/RNA out of all the amino acids available
2. Why is the environment never evolving dynamicaly but is static with Darwin's theory? Hence Darwin does not reflect relativistic aspects of evolution and social adaptation, let alone super adaptation through calculation.
3. While quantum mechanics show a change in speed of the particle as its position is observed, so does animal behavior change when it feel observed or not. This form of unknown and behavior of adaptation to the unknown is not even touched upon the primitive deterministic naive Darwinian approach.
Because you are reading 19th Century Darwinian Evolution, not current theory.
4. And while a tree branch grows thanks to a DNA program, in chaotic manner with a strange attractor, so has evolution seemed to follow a strange attractor and a program. The "DNA" of ID has not been found, but it can be programmed in a computer to create intelligently evolving machines, just as regular full chaotic evolution can be programmed too but with lesser effectiveness.
I think that is a matter of perception, not actuality, akin too the Anthropic Principle in physics.
So9
DNA is not made of amino acids. And no, not all beings share the same set of amino acids. As for sharing the 4 nucleotids, these are operational "bricks". With these 4 bricks you can make gazillions of different unicellular beings all potentialy combining and at the origin of who we are today, not just one. I suggest that the meeting of sperm and egg tells about the capability of some cells or proto-cells to combine each other and build on top of each other, in the manner of the building blocks of knowledge and information.
After all, don't we process information softwarewise through building blocks of learning? I am sure hardwarewise it follows the same path. Hence it is not just adapatation, but combinations which allow the preprograming of adaptations in new environments.