One of the first things you're taught to understand when interpreting data is that you have a bias. It is impossible not to have a bias.
Take for example: 1+1=2. Is it an extremely simple equation, or a decades long mathematical pursuit to establish certainty?
Our bias tells us we can confidently assert such simple statements, but the truth is, unless we spend an agonising length of time understanding the most insignificant and asinine facts, we NEED biases to understand the world.
The point of understanding we have biases is to think more critically about which ones are most obviously wrong.
I'm trying to understand the underlying presuppositions which lead you to this opinion.
Are you convinced psychiatric medicine: