The truth is that they already know what Bitcoin is, but they refrain from participating here because they think crypto currencies are fraudulent and illegal. That's what I experienced when I tried to invite a friend to join Bitcoin.
There are countries that are banning cryptocurrency because their own economy cannot handle the growth of bitcoins and altcoins which affects the people surrounded by focusing on trading and leaving the corporate world.
thats right . not all country legalize bitcoin so not all people know it and even in some country that bitcoin is already legal , there are still people who didnt actually know it because they are busy from thier life outside the web . so people's reaction will always differ from each other .
in my case , whenever i invited my friend and neighbors to join crypto , they will only say that crypto is too complicated for them . they get easily discourage even if i say that i will teach them the basics . maybe they are just lazy to learn .