If you travel to the States... they have a lot of different words than like what we use. For instance: they say 'elevator' we say 'lift' they say 'drapes' we say 'curtains' they say 'president' we say 'seriously deranged git.'
You live in a deranged age more deranged that usual because in spite of great scientific and technological advances man has not the faintest idea of who he is or what he is doing.
Knowledge is invariably a matter of degree: you cannot put your finger upon even the simplest datum and say this we know.