What makes people irrational thinkers?

[R00tKiT]

I have been thinking lately when it comes to how people become rational thinkers.

I think the simplest answer is that people aren't meant to be rational thinkers. We're wired to survive, thrive and procreate. You might even say that all our scientific investigations are a byproduct of these primitive drives. Advances in medicine obviously help extending the human lifespan, for example.

Also, if you look at the history of many sciences, like physics for example, you will notice that our understanding of the physical world mostly stagnated throughout history. This means that, even the best minds that ever existed attempting as hard as they can to figure out what happens out there were stuck a very long time before reaching some valuable insight, and it's always thanks to the cumulative nature of scientific understanding.