This is even true if they see your folder overhere. People are way to scared overhere, and forget the importance of basic tools.
They even look if they see an alien if I use a piece of cord and knots to attach stuff.

I can remeber when I was a kid that my grandfather alway's carried a pocketknife wich was not a problem at that time.

Carrying a fixed blade in the wrong places, can even get you into trouble with the law overhere.