Breaking a preconception in science is harder than breaking an atomic nucleus,” Einstein once said. Only when empirical physics with unquestionable evidence force us to abandon those philosophical prejudices. Pot head that’s what I do I garden I drink and I know things poster. This rule will be repeated in the 20th century and of course forever. So science often has sudden developments, they happen after certain prejudices are broken. These stereotypes come from assumptions that people make unconsciously but they still think it is obvious.
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