Self-evident to you, unproven to the scientific world. Random mutation might be responsible for self-evolution, but then again, it might not.
What you are trying to say is that since everything about Evolution is obvious, that Occam's Razor supports it, and that's a ridiculous tautology.
List all that is required for Evolution. List all that is required for Intelligent Design. Count the number of items and then apply William's theorem. If you can do it honestly, then you'll begin to see why Evolutionists don't quote Occam's Razor in any serious debate...
Stop twisting the argument. The hypothesis is that mutation/selection are adequate to cause speciation. Mutation exists and selection exists. These are verified premises. That mutation/selection causes speciation is purely hypothetical as we do not have any specific evidence of it happening even though there is nothing to suggest it is not possible. This hypothesis doesn't even demand that speciation IS caused by mutation/selection, only that it is a possible mechanism of many.
I've noticed in the last few responses to things I've written that you are having difficulty with reading comprehension. It would be a lot more fruitful if you actually addressed what I wrote rather than what you think I said.