Hopefully this undermines your belief that technical people are in some way immune to all the biases, emotions, fears, hopes and general humanity of people at large. Frequently, they're worse; they believe themselves to be hyper-rational cyborgs driven purely by evidence, giving themselves carte blanche to assume they're unaffected and thus don't even need to examine their own thinking.

Yes, I too am a mental mess and use reasoning and convenient choice of evidence to justify decisions and opinions I already formed.