Research by American scientists has shown that the human brain refuses to believe what it does not like. Their conclusion: it is useless to inspire something to a person and convince him if he already has his own established point of view. A person rejects information that he does not like on the subconscious level.
Xxx: American scientists cut out the palm of the British.
Zzz: I have understood this without any scientists for a long time. People believe what they want to believe, often completely ignoring common sense.