In my experience, most people who believe in Darwinian evolution know very little about what the theory really says and how this evolution is supposed to work. They believe that it most certainly works, but when you ask questions about the specifics, you won't get much out of them. And if you do, it will likely turn out that what they say isn't actually true.
The theory of evolution by natural selection is like a rich folklore, full of persistent myths that refuse to die no matter how many times you prove them wrong. We have a very flawed educational system that promotes established dogma instead of looking seriously at the science that's supposed to support it, and questioning this dogma is often met with downright aggression.
You go to school, you get served the standard version of EvolutionIsTrue™
, you're told in no uncertain terms that it's 'proven' (even though nobody can show you any actual proof), and if you're like most people, you probably never question it or think about it much after that. You see references to evolution in nature documentaries that regurgitate the same misguided ideas that your teachers used to tell you, and your completely false idea of evolution keeps getting reinforced.
You think you know a lot about evolution because you went to university, though the reality is that you know exactly as much - or as little - as the university wanted you to know. If you meet somebody who has actually done any research into the matter and tells you something different from the standard version, you just laugh and don't even consider there might be anything to it.
But how much is the standard version actually rooted in reality? And how much does the popular version that everyone 'knows' have to do with the real version that scientists deal with in their labs? Let's have a look at a few examples of how what's being presented to us has little to do with reality and what it does to our minds and way of thinking.