Barriers to Free Thinking

NZphilosophy looks into bariers to free thinking http://nzphilosophy.blogspot.com/

I propose Self serving bias is the dominant barrier to rational thought. Almost every debate i have ever had has been filld with self serving bias - ie the peopel have believing a certain thing because it suits them to believe it.
things such as religion are far less common but ma also be bariers to free thought.
So also are habits where the person is being in a sense lazy to chalenge old ideas.
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