To the question:
If Christianity is intellectual, why aren’t more academics Christians?
(and presumably mentions something about being practical, logical, and scientific), Peter Kreeft answers (transcribed from here):
“Because academics are not practical, and not logical, and not scientific. In fact, if I were to list the 100 most absurd, illogical, impractical ideas in the history of the world, the one thing common to most of them is: you have to have a Ph.D. to believe them. […] To be rational is to think about reality. Reason is an instrument, like light, for bumping off of things. But academics are notoriously […] in-bred, self-referential, thinking about thinking, thinking about each other, thinking about theories. […] Academics are also very intelligent and very clever, and therefore they’re much better at hiding from themselves than ordinary people, because you can invent all sorts of little tables in your mental laboratory to do your little experiments on and hide your mind from the fact[s].”
There is another reason why academics tend to get things wrong: they tend to live separated from most of human society, and therefore are largely in the dark about a large swath of human experience, psychology, and social realities. Because they are unfamiliar with these sorts of things, it is easy for them to make mistaken inferences that are based on how things are occurring around them or what people around them think.
Even in the best of cases, reason is a fragile instrument. Put another way, a chain made by reason easily breaks, and sometimes it is difficult to even see what could be wrong about one’s given chain of thought. Coding offers a limited test-field for this: working within an environment made explicitly for human logic, it is still extremely easy to overlook mistakes in that logic. One can look at a piece of code several times, and be certain that there are no mistakes. Then try to compile or run it and – there’s a mistake! With coding, however, there is a fairly close relationship between the logic (the code) and reality (does the code do what it’s supposed to do when it’s run?). Most beliefs academics have are not tested in a similar sort of way.