Barbarian observes:
It comes down to evidence. Science works by making inferences from evidence. Hence, gravitation and evolution are accepted as facts, because the evidence for them is overwhelming. Philosophy used to be grounded in evidence, but today, less so. And this is why scientists generally agree, while philosophers seem to have trouble agreeing, even on very basic things.
Evidance is to science as logic is to philosophy.
No. Evidence is to science as evidence is to philosophy. No theory of the world can proceed
a priori. It must always be grounded in what is. We can infer things about the unobservable only by observing the world. (our own minds being part of the world)
Philosophy lost its way, I think when it retreated from evidence. Once you lose that grounding, than logic can go anywhere. And it does.
However, like logic needing to be grounded in good reasoning as it's foundation, science needs to have good evidance to be it's support. When a scientific understanding takes the work of other theories, and spins them to new situations, at best it can be called a hypothesis, and until it can be proven (or for the sake of argument, have evidance to support the conclusions), it is philosophy.
No. It is a hypothesis. Quite different from a philosophy, which must be a system. A hypothesis is merely a prediction based on previously known things, about things not yet known. It is grounded in what we already know. When there is sufficient evidence to make it clear that the hypothesis is correct, then it is a theory. And "theory" is as certain as things are, in science. The word, properly applied, is quite different, than the commonly-used meaning in everyday discourse, where it has come to mean something like "we aren't sure, but we think maybe..."
Science is unable to have such a foundation, since it can only use physical evidence.
Science is primarily inductive. That is, we find the particulars and infer the rules from them. That might seem a bit sloppy, but God made us incredibly good at it. And of course, science has been more successful at explaining the world in a useful way, than anything else we can do. Philosophy is still trying to figure out the basics. Not that it's useless; a decent scientist should have a reasonable understanding of philosophical principles. But it isn't what makes science what it is.
Barbarian observes:
The supernatural is entirely beyond the reach of science; it can neither deny nor affirm God. Fortunately, scientists are not limited to science.
I disagree. If evidance is the nessassery element then by evidance God can be proven and given evidance for.
If so, then anyone of reasonable intelligence would accept His existence. But that's not the case. We have logical proofs for God, but not compelling evidence. If He wanted it so, it would be easy for Him to make Himself unambigously obvious. But He won't do that. I think it has to do with His desire that we freely choose Him.
What is looked for though is repeatable evidance. Something to prove in a lab.
Like the DNA analyses that confirmed common descent, worked out by entirely different lines of evidence. Like the demonstration that dinosaurs (but only the line of dinosaurs predicted to be in the group ancestral to birds) had birdlike respiratory systems. Like the confirmation that oxygen isotope ratios in the bones of primitive whales confirmed that they were largely freshwater animals at first.
That sort of thing. Of course, repeatability is not merely a lab procedure. It's going out in nature and observing and testing hypotheses to see if they are correct. Labs are only a small part of science; much of it must go on outside the lab.
Barbarian suggests:
Proof, in the sense of logical certainty, is not part of science. It's more like the legal notion of proof, that is of evidence sufficient to make denial unreasonable. But there certainly is abundant proof for evolution, beginning with directly observed speciation, through numerous predictions of fossil intermediates later found, though genetic evidence, confirming phylogenies by anatomical or fossil evidence, and so on. Would you like to see some of it?
Thanks but no thanks. Evolution is an intreasting topic, but it's more often then not a moot point. Whether it's true or not doesn't change the world or be useful in everyday life.
If you ever need an antibiotic, you'll be affected by it. The use of non-fetal stem cells was worked out by recourse to evolutionary theory; cells can be induced to become pluripotent, so that there is no need to harvest fetal tissue, because of the findings of evolutionary scientists. This might not be much to you, but as a Catholic, it means a lot to me.