There are people who do not believe in the existence of a Transcendent Power (what theists call God) because they cannot prove its existence with anything like scientific certainty. But in reality in everyday life we all "believe" (accept as true) many things without such proof. Indeed, most of what we assume to be true, most of what we think we know, we accept on faith. In your own field of study and in your own life, how much information do you accept as true on authority (based on trust), without proving it for yourself with anything even close to scientific certainty? Give examples.