Evolutionary theory has nothing like the evidentiary backing or predictive power of the theories of the hard sciences, let alone the backing of the mathematical and rational proofs of demonstration traditionally applied to the hard sciences as well. Evolutionary theory is a collection of anecdotes and inferences predicated on the unfalsifiable presupposition of metaphysical naturalism, the presupposition that all of biological history is necessarily an unbroken chain of natural cause-and-effect. How convenient, given the fact that the evidence actually fits a biological history entailing a series of creative events and extinctions over time as well. Mathematicians and engineers are the best informed skeptics. Evolutionary theory just doesn't add up in that regard.