"I can make this gap I know it, there's acres of room, and plenty of time, all I need to do is put the gas pedal to the floor, and...."
Bzzzzzzt, wrong, sorry.
"I'll be alright, just this once, and I know that s/he'd never say s/he'd had a test if s/he hadn't, and condoms are such a bind. Just this once and I'll be fine..."
Bzzzzzzt, wrong, sorry.
"I know this ladder is stable, I don't need anyone to hold it..."
Bzzzzzzt, wrong, sorry.
"I'm fine to drive, I've only had three, I know my alcohol tolerance..."
Bzzzzzzt, wrong, sorry.
"Lifejackets are for wusses, the weather's good, and anyway I know how to swim..."
Bzzzzzzt, wrong, sorry.
"Doctors always tell you to give up smoking and drinking, everyone knows that, it saves them having to do any real diagnosis..."
Bzzzzzzt, wrong, sorry.
What we think we know can kill us.