Using reason he arrived at a conclusion for which he has no tangible proof. His conclusion is not falsifiable and therefore falls outside of the realm of science.
Of course he has proof. There are no large birds the size of a buzzard in central Ohio. There are no pterodactyls around. The observer makes an educated guess based on all the evidence and reasonable likelihoods at hand. In the absence of any other bird that routinely achieves the size of a buzzard, and in light of the fact that buzzards are not uncommon in central Ohio, and in light of the fact that pterodactyls no longer exist, it is most reasonable to conclude that what scared the hell out of me - just a few hours after watching
Land of the Lost - was a buzzard, and not a pterodactyl. This is a reasonable conclusion, based on reason and evidence.
Let us suppose that two elderly gentlemen had tried to comfort me that day. Mr. Smythe shows me a buzzard, explains why they're circling close to my house, and asks me if that isn't what I probably saw. Mr. Roberts explains to me that pterodactyls have been killing his livestock, maiming his children and conducting dive-bombing drills on his house for years. He has no dead pterodactyl to show me, no eggs, no egg shell fragments, no place where he can take me to see pterodactyl droppings, or victims with pterodactyl teeth marks in them, or pterodactyl carcasses, but he's seen them, too, so what I saw was likely a pterodactyl.
Is Mr. Smythe's explanation possibly false? Sure. Mr. Roberts could be right. The fact that Mr. Roberts has
not one scrap of hard evidence to back him up means that Mr. Smythe's explanation is more reasonable, since it is based on unassailable evidentiary probabilities. I can pretty easily find living and dead buzzards and find their nests. I see them every day feasting on carcasses. No one has ever seen a living pterodactyl - ever. Mr. Smythe's explanation is reasonable. Mr. Roberts' is a leap of faith without evidence. Why?
If I had eschewed the rational, reasoned explanation at which Mr. Smythe helped me arrive, and instead believed that what I saw was indeed a pterodactyl, fetching home supper for a breeding population of pterodactyls that have remained hidden in Granville, Ohio for millions upon millions of year, all the while avoiding interaction or detection, I would have been left with a belief based on
faith, since the only evidence for the pterodactyl's existence is that
I think I saw one, despite all common sense, archaeological evidence, evidence of how completely unreliable eyewitness testimony can be standing to the contrary. That is
faith, and is in no way reasonable. It is the opposite of reason.
This, of course, completely leaves aside the issue of my pre-disposition to believe I saw a pterodactyl, which is another major problem with folks who place stock in the supernatural.
Deductive reasoning is part of the scientific process, not the whole of the it.
A few posts ago, you said they were different. I'm glad you admit deductive reasoning is part of the scientific process. A person using deductive reasoning is, therefore, using an aspect of the scientific process.
By your standard, no astronomer could ever prove the existence of black holes, since he hasn't poked his finger into one, or touched it. We see the black holes, measure their effects, take measurements and data that prove no other phenomena could possibly influence the space around them with equal impact, comprehend how their existence would fit into what we know and understand about the observable universe, theorize about how critically important black holes are to the creation of the universe, and understand that the compilation of the evidence tells us black holes
exist. Now, we've built apparatuses to create one here on Earth. This is
science.
If an observer instead eschewed this data - hard data, since the effects of black holes can be palpably measured and (now) recreated in a collider, and instead believed that the "holes" in space were really holes, since the rim of the universe is just a conglomeration of sugar donuts, he'd be making an unreasonable assumption, since there is no evidence at all to support that view. If he went through life building a career, a worldview and a theory of universal origins on that assumption, he is acting in
faith, since he's thrown reason out the window and acted in blatant disregard for the evidence. It may be more mentally comforting for him to believe that the universe is held together by a rim of sugar donuts, but it isn't reasonable, isn't the result of the exercise of reason, and has nothing to do with science.
The scientist you describe above has carried out a falsifiable experiment that others can repeat. He did not simply sit back and deduce that solution B would dissolve the element based on intellectual reasoning.
Of course he used deduction. Solution B did not fully dissolve the element, as I stated in the original example. Solution B was more successful than A, so B is the direction in which he should go. This is deductive reasoning based on the information at hand, and is scientific.
I will be happy to show you where they coincide, though it seems fairly obvious:
Definition #1 for reason "to use the faculty of reason so as to arrive at conclusions"
- can lead to -
definition #4 for faith "something that is believed in with strong conviction."
Quite simple.
Not simple, and completely oblivious.
Belief is not reason. I don't know how else to get this through to you. I believe that a Flying Spaghetti Monster will punish me for my sins. Is that reasonable? No. Reasonably, I could believe in no such thing, since no one has ever proven that Flying Spaghetti Monsters exist, or that they care about my sins, or that they're able to punish anyone for anything.
Believing in all this requires faith, which requires no proof. In fact, faith actively eschewes proof.
I run across a bridge every day while jogging because I reason the bridge will probably not collapse when I cross it. Is this faith, or reason? It's reason, because a) I have crossed this bridge before, b) I saw the bridge constructed, and noticed they used steel beams and not drinking straws, c) someone else just crossed it, and they went over safely, d) many cars, weighing far more than I do, are crossing it now, and having no problems, e) the bridge has never collapsed before, f) bridge collapses here in the civilized western world are pretty damn rare, e) there's a actual bridge there, f) it's the only bridge there, g) I've been on bridges before, h) it's a real bridge, not an (impossibly) invisible one provided by the beneficient (unproven) actions (unproven) of space aliens (unproven) come to earth (unproven) to save us (unproven), and so on. I make a reasoned decision that crossing the bridge twice a day is safe to do. This is a reasonable way to proceed based on
proof - the evidence at hand. I don't need to conduct structural safety tests on the bridge every day to act reasonably, scientifically, and understand that the bridge is probably safe to cross. Now, the bridge may well collapse one day, but it won't be for unfathomable reasons, won't be the whim of space aliens upset because we don't listen to Al Gore, won't be because of some supposed Indian curse. An investigation will be conducted, and a reasonable, rational cause of the collapse will be determined.
I admire your willingness to select only certain phrases of the definitions (neither of which actually support your opinion), and how difficult it is to see cherished beliefs for what they are - simple willingness to believe, despite a lack of evidence (or, in many cases, flat-out contrary evidence). In short, I admire your
faith in the paranormal, but it isn't
reasonable.