A completely bald head and a head which had a close shave very recently would look alike especially for the onlookers for all practical purposes..
(Maybe a head shaved recently in a temple would be decorated by some material which is a cousin of sandal paste.)
Likewise black hair of a youth and the dyed hair of an oldie.. the former having naturally fine teeth, and the latter having unnaturally shining dentures will also look the same for others..
Appearances are deceptive..
But people will definitely take closer stock of the situation if they are in search of a prospective son in law.
. And a closure scrutiny will reveal it all..
The same logic can be applied to creations in social media too..
if a post is apparently catchy everyone would read it.. and celebrate it with likes and awfuls..j
It makes no difference for the reader whether it is original, copied, or stolen.