Evolution is a complete scientific theory with volumes describing the theory, how it fits, the pitfalls and problems and why it holds with biology as we know it.
It is no more faith-based than electronics, physics or chemistry.
Your ignorance doesn't remove or obviate the theory.
One of its pitfalls is explaining how one species changes to another.
There is nothing in the fossil record to show how this happens. If you believe it happens with no scientific evidence, your belief is a leap of faith.
I know that there are people who believe it happens, and can cite others that believe it happens.
They may be right, but the belief is faith based just like the people who believe the Old Testiment Prophets.
It is useful to have a leap of faith to cover what we don't understand. I do it too.