Theory and belief
It is always easier to change facts or ignore some to make them match a theory or belief ; but could you change a theory or belief in regard of Every facts ?
If you present a theory or belief to someone with no facts to prove it, if that someone has already an opinion on that theory or belief, good luck changing it. But if you present that same theory or belief with fact to support it, you may have a chance for that someone to consider it. On the over hand if that someone decide not to consider the theory even if you have the fact to prove it because of their belief; I call them fool.
If you present a theory or belief to someone with no facts to prove it, if that someone has already an opinion on that theory or belief, good luck changing it. But if you present that same theory or belief with fact to support it, you may have a chance for that someone to consider it. On the over hand if that someone decide not to consider the theory even if you have the fact to prove it because of their belief; I call them fool.