Faith is what you have in the absence of reason.
I have faith that my obese son can do 300 push-ups, because all the evidence in the world implies that he cannot: I believe in something despite the lack of evidence supporting it.
However, I don't have faith that my body-building daughter can do 50 push-ups: all the evidence in the world implies that she
can: I believe in something
because the evidence supports it.
And that's just what faith is: believe in the absence of supporting evidence. You have no reason to believe that something is true, that something exists, that something will occur... but you have
faith that it is, that it does, that it will.
So while logic, faith, hope, science, certainty, trust, are all ostensibly different, neither are they compatible:
- Logic is deriving conclusions from premises. If the logic is valid and the premises sound, then the conclusions are true.
- Science is deriving the most probable explanation of phenomena. Scientists look at the available evidence, and come up with various hypotheses to explain it. Via experimentation, observation, and the acquisition of new data, we become more confident that one of those explanations is true.
Not 100% confidence, but that's an inherent limit of anything outside of pure logic. Trust and certainty? Sure. Faith and hope? No part of science whatsoever.
- Faith is belief in the irrational, the uncertain, and the unevidenced. It is directly opposed to rational, evidence-based belief.
- Hope is what you want to be true, and what, while improbable, is not uncommon. I hope I'm not sick: there's a good chance that my runny nose and pounding head are symptoms of an illness, but there's also a chance that I'm overreacting.
It's like statistical faith: it's happened before, albeit infrequently, and you would like for it to happen again.
- Certainty is a measure of how sure we are that it's true: with faith you believe without reason, and thus have no confidence. With science and logic, beliefs are those that are most likely to be true, and thus you have some measure (usually a good dollop) of confidence that they're true.
But then, this is all semantics

.
As far as semantics, yes it is, but, there are issues/objects and then there are concepts behind those objects/issues. You can arrive to the same conclusions even with different ways of getting there. A guy can meditate in deep thought for a long time and arrive to the same conclusions that someone else did through independent study. I, for example, knew what semantics was even before i ever heard of the word. that will happen if you understand a concept that goes behind and object/issue before actually knowing the concept/issue (I love that kind of stuff).
You automatically assumed that faith is the absense of reason first before defining what it is. If this were true then you would only be able to give examples of faith only when it pertained to belief without reason. You may have
chosen to
only give examples of blind faith (ever heard that term?), but you could have given examples of faith that head reason behind it. I didn't want to have an example war, but I should have known that I was going to have to. You can have faith in something with reason, therefore, it is not bound
only by lack of reason, it is bound
both by reason and lack of reason, the only thing is that there has to be contrary present. Yours was another example of confusing Hope with faith.
I'm going to have to follow this further, and really break it down this time.
Faith As I defined it earlier is trust in something either with or without reason in the presense of contrary. What that means is this:
-#1 You have faith that your out-of-shape son can do 300 pushups. You have no reason to logically believe that he can do 300 pushups, it is without reason, but also without knowlege. There is contrary, the possibility of failure. Is this faith? Yes. It is blind faith.
Some more #1. You have a friend fighting a war in Iraq. You have faith that he'll be ok. You have little reason to believe that he'll be ok, but you do have a little. There is contrary, the possibility of death. Is this faith? Yes, it is blind faith, but not as blind as the example before, mabe inbetween.
-#2 You believe that your bodybuilder daughter can do 50 push-ups. You "know" that she'll be able to do them because it's a "forgone conclusion". Therefor you don't "think" she'll do them, you "know" she'll do them. Is this faith? Yes.You believe with reason, and there is contrary, the possibility of failure. You had in your mind that it was a "definite" that she will do 50 pushups. you didn't "think" she'd succeed, you "knew". Therefore all definitions of "think" you wouldn't say applies to you here. However, your position includes lack of "knowlege", even though you had "reason". In reality it is very easy to for a bodybuilder to fail at doing 50 pushups. In any case it does not matter, she may have done her 100 pushups after carb loading and having glycogen storage. You would have been correct, even with reasons that wern't entirely applicable to the success of your doughter. But you didn't know that, but what you did know, or think, is what contributed to your mindset of "knowing" that she was going to do it. In reality, you had faith in your daughter, reguardless If you "knew", "didn't know" or was tricked into "knowing". This is where the definition of faith gets scewed. The person who is tricked into knowing really has faith, but they just don't know it. The reason why they don't know it is because they think faith is only in the absense of reason.
Some more on example 2. A doctor gives a patient a placebo to cure him. Let it be known that a placebo has never, nor has it ever, cured someone of a sickness.The patient is cured because he believes/has trust in the pill to do it's job. Is this faith? Yes. he has belief/trust in the pill, he has an overabundance of reason, and the possibility of contrary, not being cured (or according to him, the pill might not work). Could the placebo effect fail? Absolutely, if he dosen't have any faith. It is faith that is doing the curing. The placebo has never worked. Faith is not a placebo, faith is what is behind the placebo that allows the placebo effect to work. The guy dosen't "think" that he might be cured, he knows for a fact because he took the pill as instructed, after being told logically how the chemicals in pill will work. However, using your definition if faith, ask this guy if faith played any role in him being cured and watch what he tells you.
Faith is belief and trust in something with or without reason with the possibility of contrary . There are many different levels of reason reguarding faith, ranging from none at all to absolute reason (different than "knowlege") Even true knowlege would be reason of faith. Some people just don't like the "F" word. Faith is not soley defined by the absense of knowlege. Like Faith and Logic, knowlege is a base in and of itself, in which other things are based off of it. I gave you an example of faith that involves reason without knowlege, an example that involves reason with knowlege, and even an example that involves knowlege without reason, and all of them are worthy of being described as a faith.
Hope Is belief/want in the possibility of something without reason and
with or without contrary. What that means is this:
-#1 You have a firend firghting a war in Iraq, you say "I hope he's OK". Is this hope? Yes.You believe that there is a possibility that he's ok. You have no idea for sure, and no reason to know at all. There is a possibility of contrary, death. There is a reason why I put this as #1 in my hope argument, and that's because It's almost exactly the same as #1 in my faith argument. Hope is not the same as faith, but it is the same as blind faith, with the exception of two things. #1, blind faith won't require the thought or anxiety that Hope does. Blind faith is exactly the same as hope except something is making you sure of yourself, despite the fact that you have no knowlege or reason whatsoever. And #2, Hope does not have to have the possibility of contrary.
-#2 You say "I hope I get a bike for Christmas ". Is this hope? Yes. You want something to be, but have no reason to believe that it will be. There is no possibility to contrary, as you yourself aren't failing at anything and you have nothing to loose. (I define contrary as failure or loss on either you or someone else). Hope id the only one in which it can still be defined even without the possibility of contrary. This isn't to say that anything without contrary could theoretically be defined as hope. That would be absurd. If you have reason to believe without contrary or opposition, It is logic or knowlege (not that I fully defined logic or knowlege here, I
hope I don't have to say that

LOL). If you don't have reason to believe wity or without contrary, It is hope. I could also say "I hope we'll find a way to shoot lightning from our hands". It has never happened and never will happen. I'm not sure that your definition of hope fits that, but I think mine does.
I don't want to spend too much time here. I'll come back and spill my views on the difference between Logic and science.
Peace.