How does cause and effect prove evolution is not real? Mutations have a cause, the effect is evolution, your point?
How forgetful are you? Or is it that you simply don't read what is posted?
One of the bottom line premises of evolution is mutation without a cause behind it. Since the only real "evolution" we have seen is in the lab, it has been caused by us, the people. So, lab-caused evolution doesn't even fit the theory of evolution.
There is more to evolution than mutation. A small percentage of mutations are beneficial, and selection can cause the beneficial mutations to persist and the harmful mutations to die off. The combination of mutation and selection can create new useful adaptations.
Sometimes things do get built by accident. Many discoveries started out as accidents that people recognized uses for. Many other designs (accidental or not) have been selected against, that is, discarded. Design itself is an evolutionary process.
Experiments and genetic analysis show that mutations (plus selection) do account for new adaptations