Showing posts with label logic. Show all posts
Showing posts with label logic. Show all posts

Tuesday, September 18, 2012

Eyewitness Experiences and the Existence of God

Do eyewitness encounters with God “count” as an apologetic for the existence of God? If so, how in the world can one man’s experience with God, for example, at a burning bush (or the Apostles' claim to have seen the Resurrected Christ for that matter) be a proof for God’s existence if the skeptics themselves have not seen these events with their own eyes? Can such experiences be validated?


The White Stag Illustration
Let me try an illustration. Suppose that a large group of persons went together on a camping trip into the woods, some three hundred people. And let’s suppose that ten men are sent out to fetch water from the stream while the others stay back. And let us further suppose that those ten men witness with their own eyes the most beautiful, pure white stag, drinking from the stream.  They cannot believe our eyes! An albino buck! These men immediately return to the camp to tell everyone what they’ve seen. Most are skeptical. Some are not interested. A few are curious. Eventually the first ten men lead another ten people back to the stream, right to the same place they saw it, and sure enough--it is gone!

Logically (remember: we are interested in reasoning clearly) does the fact that the second envoy failed to see the white stag prove that the first group’s experience didn’t happen?

One man says “I didn’t see anything!”

Another man says, “I didn’t either!”

A third says “I’ve never even heard of a white stag!”

A fourth says “That’s patently impossible!”

The ‘Logic’ of Unbelief
Quite often, the logical thinking of the skeptic goes something like this…
a. I’ve never seen a white stag.
b. I can not believe what I have not seen. 
c. Conclusion: Therefore there are no white stags.

Obviously there is a fallacy between points ‘b’ and ‘c.’ The fact that one observer has not personally beheld any given object or phenomenon does not make it impossible a priori.

Nevertheless, the question remains, How do we validate other people’s claims of religious experience? If a skeptic has not experienced a given phenomenon (such as grace), how can he weigh the claims of those who have? Is there any objective way that he can weigh the evidence? I think there is.

Weighing the Claims of Witnesses

1. Agreement in Testimony: First, in the White Stag Illustration, the witnesses have the benefit of not being alone. If only one man had seen it, we might have reason to suspect that he’d been smoking something on the walk to the brook. But the fact is that nine others saw the same thing, and their testimony agrees. In Christianity of course, we have the benefit of 2.2 billion other people making the same claim of having experienced the grace of Jesus Christ! It’s hard to dismiss 2.2 billion people! And that is only counting those alive on the planet today, not to mention the billions that have lived in prior centuries.

2. What Do They Stand to Gain? Secondly, we can ask whether the witnesses stand to gain anything by making such a claim. Are they planning to write a book about it? Are they selling the rights of the interview to Katie Couric? Are they going on a speaking tour to make millions? Will there be a Pixar animated “White Stag” movie forthcoming? If there is clearly something to gain personally, we might weigh their claims with some degree of dubiousness. 

3. What Do They Stand to Lose? On the other hand, we might also ask if their experience puts them in such a position that they are now going to suffer because of their experience. I can tell you that Moses’ claim to have seen God at the bush did not exactly make life easy for him. It made his life infinitely more complex. It brought him into the cross-hairs of Pharaoh. It brought great suffering to the Egyptians in the ten plagues. It would eventually cause Aaron and Miriam to rebel against him. And ultimately, it placed upon his shoulders the additional burden of leading the people of Israel who, throughout much of the Pentateuch, amount to a bunch of whiners and complainers, and grumblers, and faultfinders!

As for the Apostles, we can say without any hesitation that their having seen the Resurrected Christ was a decidedly “inconvenient truth.” Their claim to have seen Jesus Christ raised from the dead cost ten of the remaining Apostles their lives. James was beheaded. Peter was crucified upside down. The only apostle who lived was John, who was exiled.

In fact, I can go even further and state that being a Christian believer is the hardest life any mortal could possibly choose. Our people, from day one, AD33, have been chased, mocked, beaten, burned at stakes, tossed to lions, systematically persecuted, hated, lied about, slandered and falsely accused. 

Add to that the fact that we as a people willingly choose to love our enemies, turn the other cheek, tithe on our income, volunteer or time, deny the cheap pleasures of this world, retain our sexual purity within marriage, and many other marks of sacrifice—one wonders why anyone would willing choose Christianity if God had not first chosen us.

Conclusion
So if there are multiple witnesses whose testimonies agree, and those witnesses stand to gain nothing by their claim (at least in regards to this fading world) and in fact have everything to loose for their confession, eyewitness testimony turns out to be a very powerful apologetic for God’s existence. 

Matthew Everhard is the Senior Pastor of Faith Evangelical Presbyterian Church in Brooksville, Florida. Please consider following on Twitter @matt_everhard


Thursday, August 2, 2012

As Debate Season Arrives, Don't Lose Your Mind

We are about to find ourselves in the throes of the political debate season. This is the time where our local and national politicians grapple for positions like Olympic Greco-Roman wrestlers. The only difference is that there are no logical referees to flag and penalize formal and informal fallacies during debates. Wrestlers, on the other hand, must compete according to the rules of the mat.

I would contend that Christian believers are to be among the clearest thinkers in the political arena. As proponents of absolute truth in a world of relativity, followers of Christ ought to have the sturdiest grip on the logic of rational persuasion among all who grapple on the mat of political discourse. At the same time, we ought to be impervious to the techniques of our opponents who often break the rules of logic in order to toss us on our cognitive shoulders.

With that in mind, let me re-introduce some of the rules of Aristotelian logic, long lost among most political aficionados today.


First, let’s consider the difference between a formal and informal fallacy.

Logical arguments should be inferred from a persuasive set of premises and a clearly deduced conclusion (a) All men are mortal (b) Socrates is a man (c) therefore Socrates is a mortal. This completes a classical syllogism.

Formal logical fallacies draw conclusions that are not warranted or supported by the premises. If the premises are shown to be false or the conclusion is not derived from the premises, we ought to reject the argument as logically persuasive.

Informal fallacies however, are much less apparent. Often they are tied to the manner of presentation or the tact of the speaker. Although often emotionally very compelling, they are nonetheless to be regarded as non-persuasive rationally. Here is where we must be very careful. This is, after all, what logic is about: rational persuasive power, not emotive power.

With that being said, here are some of the top informal fallacies likely to be present in most political debates:

(1) Ad Hominem Fallacy: This is an attack against the man. While it may tell us about his character, personal attacks do not compel us rationally against a man’s position. Example: John is a Cretan. We cannot trust his tax policy. He may be the worst dirt-bag alive; but that has nothing to do with the logical consistency of this tax plan.

(2) Guilt by Association Fallacy: This is an attack against a man’s known associates or relationships. Again, while it may speak about his character, it says nothing about his argument per se. Example: John has been photographed with Hitler at a recent campaign rally; therefore we cannot trust his environmental protection policy. Notice that the emotional power of this correlation (John and Hitler) has nothing to do with his actual position on the environment.

(3) Ad Populum Fallacy: This is an appeal to the opinion of the majority of the audience. Here the candidate attempts to cast himself as a ‘man of the people’ and his opponent as an extremist. Notice how often this is done every day in ads. Again, the opinion of the majority can be and often is wrong and should not be rationally persuasive. Example: Most people accept homosexual marriage today; since John is in favor of traditional marriage, he is an extremist and should be regarded with skepticism. 

(4) False Alternatives Fallacy: This one is very subtle. Here the argument seems to suggest that there are only two possible alternatives that can be taken in any decision. It forces the opponent to choose between options as a false dichotomy. In reality, there may be dozens of other possible options and solutions. Example: We must either raise taxes or reduce our armed forces. So which is it, Joe? Are you for raising our tax burden, or weakening our national defense? 

(5) Straw Man Fallacy: Again, this is present in almost every debate you will watch this season. Here the candidate intentionally reduces the force and strength of his opponent’s position in order to knock it down more easily. He argues against a much lesser position than his opponent actually holds. By making a man’s position sound stupid, he evades actually having to take him to task on specifics. Example: Since my opponent stands for lesser government, he probably won’t even fund a police or fire department to protect our homes! 

(6) Invincible Ignorance Fallacy: In this fallacy, an individual refuses to accept proven facts no matter how persuasive they may be. His predispositions simply refuse him the latitude to change positions no matter how rationally compelling the actual data. Example: I don’t care what psychological affects a post-abortive woman suffers; I believe in a woman’s right to choose. 

(7) Circular Reasoning Fallacy: These are often a bit more complex to discern. Here, the debater assumes as a premise the very conclusion he is trying to prove. His conclusion is based on accepting a priori the very thing at which he hopes to arrive. Example: This tax will be good for local business. We all want businesses to thrive in this economy. Therefore we must write tax laws that will promote economic growth, such as the one I am presenting.

(8) Tu Quoque (You too) Fallacy: This fallacy alienates a man from affirming a position that he once denied by his actions. It exposes a man when he moves from a lesser position to a stronger one. Often we call this “flip flopping.” But, in some cases, changing positions is actually the best thing a man can do! Example: Jones says he is for reducing taxes. But he himself voted to increase taxes four years ago. Of course, times and situations do change. If a man realizes the error of his ways and changes, this cannot be logically held against the cogency of current position now.

As you watch the debates on television or perhaps in person this fall, see how many formal and informal fallacies you hear during argumentation. Once you notice how often our candidates argue emotively rather than rationally, you may wish you lived in a different generation completely.

Perhaps the Greco-Roman era?

Matthew Everhard is the Senior Pastor of Faith Evangelical Presbyterian Church in Brooksville, Florida. Follow on Twitter @matt_everhard