It’s been talked about for a long time. The nature of Clark Kent’s disguise which stops the general public from finding out that he in fact is the man of steel. He is Superman! How could someone simply just put on a pair of prescription glasses and cover up his identity?
Henry Cavill puts a similar test to the people of New York City. On his official Instagram account, he steps out in public in Time Square with a Superman T-shirt on! Does anyone recognise him?
Take a look for yourself.