The brain does not desire 'truth'; it merely craves 'comfort'.
There is a fundamental reason why the convictions of fervent political adherents remain unyielding, irrespective of the objective big data and empirical figures presented.
1. The Principle of Energy Conservation
The dismantling and subsequent reconstruction of existing belief systems, triggered by novel information, exacts a substantial caloric toll on the brain. Consequently, the human brain is intrinsically equipped with a sophisticated bias mechanism that instinctively cherry-picks information corroborating its pre-existing convictions, while systematically dismissing contradictory facts as erroneous, all in a strategic effort to conserve metabolic energy.