Does culture have to be original?

Also, having looked into the trick or treating thing a bit: Canada invented the phrase “trick or treat”, and America has variations such as trunk-or-treating. Modern trick or treating doesn’t involve performing at the door. Some of these innovations (ie. the phrase “trick or treat”) have even propagated back to the originating countries. I think a binary view on this is too restrictive and unrepresentative of the reality of the situation. The tradition is still very similar to what it was, yes, but it changes over time.