An argument we are increasingly hearing from theistic evolutionists is that the "unguided" or "random" aspects of Darwinian evolution are merely "philosophical gloss" or an "add-on" promoted by new atheists who use bad philosophy. Jay Richards covered this question in his recent dialogue with Alvin Plantinga--see here, here, here, and here for the series. While many new atheists undoubtedly make poor philosophers, the "unguided" nature of Darwinian evolution is not a mere metaphysical "add on." Rather, it's a core part of how the theory of Darwinian evolution has been defined by its leading proponents. Unfortunately, even some eminent theistic and intelligent design-friendly philosophers appear unaware of the history and scientific development of neo-Darwinian theory.This is wrong in many ways.
Here's the simple explanation ... so simple that even an IDiot should be able to understand it.
Modern evolutionary theory consists of many parts including the mechanisms of evolution. The main mechanisms are natural selection and random genetic drift and those two mechanisms act on populations containing variation. The variation is due to the presence of mutations and mutations arise "randomly" with respect to ultimate purpose or goal.
There are tons of experiments proving that mutations are essentially random. (Let's not get into quibbling about the meaning of "random.")
Now let's look at the history of life on Earth. This is a completely separate subject from evolutionary theory. It's like the difference between the theory of gravity and how and when our particular solar system formed.
While it is true that evolutionary theory doesn't allow for a "guided" mechanism, it isn't true that the history of life has to be devoid of purpose or guidance. There could well be evidence that god intervened or that particular organisms were preferred over others and the history was tilted in one direction. But there's no evidence that this is the case—with the possible exception of beetles.
The history of life looks exactly like it should if it were the result of accident, contingency, and evolution. There's no evidence of god(s). That's what makes the creationists upset, not evolutionary theory.