Sign, sign.
Wasn't that long ago I was the inexperienced Vaper. I am admittedly far from the Sharpest Knife in the drawer, just a determined person.
I had no issue Learning everything possible about each step before taking it.
Some just assume they can walk on water or fly with a towel tied around the neck.
I will continue attempting to Educate those types, hopefully before they get hurt.
* It is as reasonable to assume any unknown may present a risk/danger as it is to assume nothing in particular is dangerous.
The rational person investigates and becomes educated.
The irrational person gets Blown up or writes a Bill to ban.
Even with Owners Manuals, Safety Regulations, Stickers/signs all over:
Push mower accident - Google Search