Any system that depends on reliability is unreliable.
A young gentleman in a jewelry store looking at engagement rings. The sales clerk walks over and asks, "May I give you a hand with something?"
He replied, "No thanks, I already have her hand... now I just need THE SOMETHING!"
It's been my life long vision to become an optometrist...
But I just couldn't see a way to make it happen.
I got a job working in a hay field.
After one day I bailed.