Yes, punctuation may also convey meaning , but has a much shallower effect than grammar.
I beg to differ. Something as small as a comma can make a huge difference in the meaning of what is written. For example:
I'm not sure I would call that shallow. It may be a silly example, but it applies to real-life sentences as well.
So while you need to defer to other people in almost every part of your life, I don't think this qualifies as "faith". Do you "believe" in your CPA, or do you trust him enough to let him do your taxes for you because of his track record and reputation? Do you "believe" in your auto mechanic, or do you just trust that he won't screw up your brakes because of his track record and reputation? IMHO there is a big difference.
First definition of faith (from dictionary.com): n. confidence or trust in a person or thing.
As far as I can tell, you're arguing that two synonyms don't mean the same thing. Unless you are an expert in every possible area of study and accomplishment in the world... you have to believe/trust/have faith that other people know what they're doing and talking about... because you can't specialize in everything on earth.
If you're not part of the solution, you're part of the precipitate.