Faith

Faith is not some obscure religous thing. Every person deals with faith every day. Faith is something which is accepted and something which is learned. I'll give you an example.

I drive a 1989 Isuzu Spacecab truck. When I'm driving down the street at 30mph and I'm coming up to an intersection I have faith that my brakes will work. I'm not stressed about it. I don't fret about whether or not they will work. I truly and honestly believe that if I press the brake pedal, the brakes will do their job and the truck will slow down. Am I stupid to place this faith in my brakes? Should I place my life in the hands of a mechanical system built by a stranger on the other side of the world? Why do I trust my brakes? For two reasons:

I take care of my truck, including inspecting and repairing my brakes.
My brakes have always worked before.

Neither of these reasons will ensure that the next time I press the pedal, the pads will push against the discs. That won't stop me from driving my truck, though. That's what faith is.

By the way, I also own a 1965 MGB. The last time I drove it, the brakes didn't work. Faith can be accepted and earned, but it can also be lost. I no longer believe that the brakes on that car would stop me.