Posts tagged ‘logic’

April 22nd, 2013

Q&A 19: Calvinism and Free Will

by Max Andrews

Question:

Hey! My name is Josh. I’m a young college student by day (and christian apologist by night, jokes). But in my personal life, apologetics is important to me.Aside from that, I have a question I think you could help me with. I’m a Calvinist (hold the tomatoes) because I think, Biblically, it’s the most accurate putting together of scriptural truth (basically the best systematic theology). My problem is this:
Total Inability and free will. How are we morally responsible if we cannot choose otherwise? And since no one seeks God (Romans) and no one can come to Christ unless the Father brings them (John 6), how is it that we can really talk about free will? How would this be the best possible world where most free creatures choose Christ, when they cannot choose Him unless He first removes their inability? It seems that it doesn’t matter what world God created becaue technically speaking, He could remove the inability from all people, resulting in everyone freely choosing Christ. I hope my questions make sense. I’m eager to hear your response.Keep up the good work. I love your website!God Bless :)

Answer:

Josh,

Thanks for your question. Since I’m not a Calvinist my answer will probably be a little different from what you were anticipating. First, I’ll respond to you question from within the Calvinist system (as best as I can). Then I’ll give you  my response and thoughts on the issue as a Molinist.

April 6th, 2013

An Abductive Fine-Tuning Argument

by Max Andrews

The fine-tuning argument argues that when physics and the laws of nature are expressed mathematically their values are ever so balanced in a way that permits the existence of life. I’m merely arguing that the universe is finely tuned for the essential building blocks and environments that life requires.

  1. Given the fine-tuning evidence, a life permitting universe (LPU) is very, very unlikely under the non-existence of a fine-tuner (~FT): that is, P(LPU|~FT & k) ≪ 1.
  2. Given the fine-tuning evidence, LPU is not unlikely under FT (Fine-Tuner): that is, ~P(LPU|FT & k) ≪ 1.
  3. Therefore, LPU strongly supports FT over ~FT.[1]

Defense of 1: Given the fine-tuning evidence, a life-permitting universe is very, very unlikely under the non-existence of a fine-tuner.

So what are some of the evidences for fine-tuning?

  1. Roger Penrose calculates that the odds of the special low entropy condition having come about by chance in the absence of any constraining principles is at least as small as about one in 1010^123.[2]
  2. Strong Nuclear Force (Strong nuclear force coupling constant, gs = 15)
    1. +, No hydrogen, an essential element of life
    2. -, Only hydrogen
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April 5th, 2013

An Abductive Thomistic Cosmological Argument

by Max Andrews

The following argument is an abductive Thomistic cosmological argument from contingency, which I presented at my recent Ratio Christi debate.

  1. There are contingent constituents to the universe.
  2. Given the contingent constituents of the universe, the existence of the universe (U) is very, very unlikely under the hypothesis that these constituents are themselves uncaused or self-caused (~Cu): that is, P(U|~Cu & k) ≪ 1.
  3. Given the contingent constituents of the universe, the existence of the universe is not unlikely under the hypothesis of a first uncaused cause (Cu): that is, ~P(U|Cu & k) ≪ 1.
  4. Therefore, U strongly supports Cu over ~Cu.

The constituents of the universe include galaxies, planets, stars, cars, humans, leptons, bosons, and other particles. For the constituents of the universe to be uncaused that would mean it is metaphysically necessary. For something to be metaphysically necessary that means that it could not have failed to exist—it exists in every possible world.

For something to be self-caused it must be simultaneously antecedent to itself to produce itself as its own effect. But this contradictory. This would be akin to the ultimate bootstrapping trick.

March 26th, 2013

Q&A 16: How Robust Are Theistic Explanations?

by Max Andrews

Q&A GraphicQuestion:

Hello Max,

I’m currently reading on philosophy of religion, and I came across your site. You admit to being a “staunch proponent of abductive arguments”. It made me curious as to what your thoughts were regarding arguments against theistic explanations (such as those given in Gregory Dawes’ Theism and Explanation). For example, theistic explanations don’t fulfill explanatory virtues such as being part of successful research program (most theistic explanations failed in the past), being informative (they don’t describe in great detail the mechanisms involved in divine activity), being testable, being coherent with our background knowledge (arguably, all our knowledge involves embodied minds, so positing a disembodied one is theoretically costly), and having ontological economy (theistic explanations posit a radically new set of substances). 
 
Furthermore, given God’s omniperfection, we can expect that he will fulfill his intentions in the best possible way. But to the extent that the phenomena to be explained don’t seem to be the product of the best possible way of being actualized, it is to that extent we can doubt that God’s activity is the explanation for that phenomena. We need good reason to think the phenomena to be explained was actualized in the best possible way; otherwise, the theistic explanation won’t work.
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February 25th, 2013

Q&A 12: How Can We Know God is Good and Not a Sadist?

by Max Andrews

Question:

Mr. Andrews,
Philosophically, How can we know God is good and not like some form of a sadist who will just torture everyone in hell when they die? Didn’t CS Lewis once try to argue that evil is not created but a lacking of good, could you shed some light on this? Couldn’t it just be said the other way around too, that good is lacking evil? Then who knows what sort of entity (good or evil) ultimately rules the universe? What philosophical reason is there to believe that God is the entity that is all powerful and all good?
 Thanks,
Brandan

February 18th, 2013

Q&A 11: Is the Belief in Free Will a Properly Basic Belief? Defeaters?

by Max Andrews

Question:

Is the properly basic belief that I have free will indefeasible? I’m thinking of the fact that a properly basic belief can be defeated, but was wondering how far that goes. So can someone ever provide a defeater for the idea that we have free will? The thought came to me again when I was listening to a podcast by Glenn Andrew Peoples and he made a comment about how we should give up the idea of free will if a good enough theory (of mind) came along that denied free will. I disagree with Glenn on this but was wondering if you ever could be presented with defeaters for free will. I can sort of see an undercutting defeater might but not a rebutting defeater.

Answer:

John,

For those who may not be familiar with the issue, a properly basic belief is a belief that is held via non-doxastic justification, which is self-evident to the subject. For example, a properly basic belief is the belief that I am a mind or that there is an external reality beyond myself. The first question is whether or not free will is a properly basic belief–and I think not.

February 15th, 2013

Is This a Possible World?

by Max Andrews

So, I gave a pop quiz to my class today because I asked them if they had any questions about any of the material we’ve been recently going over (logic) and no one had any questions. Because of their confidence I gave them a quiz, which resulted in very interesting answers. One of the questions was to describe some possible world. Simple enough, right? If they knew what a possible world was they could write something simple down like “there are pink elephants” or “my shirt is red instead of blue.” However, I got this very interesting one that made me think. Think about it and let me know how you would respond to this scenario. It assumes a lot about knowledge, minds, God, etc.

In a possible world there is no predictability. Nothing that happens once happens again a second time. There is no way to know what is going to happen but there is also no such thing as knowing because there is nobody to know anything since a being would require repeated processes to function and remain functioning.

February 8th, 2013

How to Construct a Cumulative Case Argument

by Max Andrews

The cumulative case uses the prime principle of confirmation: Whenever we are considering two competing hypotheses, an observation counts as evidence in favor of the hypothesis under which the observation has the highest probability. This principle is sound under all interpretations of probability.  Each argument must be taken on its own grounds and one cannot arrive at “God” at the end of each argument.  The conjunction of arguments is what is needed to make a cumulative case for the existence of God.

The Likelihood Principle of Confirmation theory states as follows.  Let h1 and h2 be two be competing hypothesis (in this case the existence of X and ~X, with X being a first cause, fine-tuner, etc.).  According to the Likelihood Principle, an observation e counts as evidence in favor of hypothesis h1 over h2 if the observation is more probable under h1 than h2.  Thus, e counts in favor of h1 over h2 if P(e|h1) > P(e|h2), where P(e|h1) and P(e|h2) depict a conditional probability of e on h1 and h2, respectively.  The degree to which the evidence counts in favor of one hypothesis over another is proportional to the degree to which e is more probable under h1 than h2: particularly, it is proportional to P(e|h1)/P(e|h2) .  The Likelihood Principle seems to be sound under all interpretations of probability.  This form is concerned with epistemic probability.

February 8th, 2013

Defining Omniscience

by Max Andrews

As advocated by St. Anselm, God is a maximally perfect being.  If ignorance is an imperfection, all things being equal [according to Ockham’s razor], then it is greater to be knowledgeable.  To prevent initial detractions from the classical definition of omniscience, omniscience should be understood as knowing all truths.

O.  For any agent x, x is omniscient= def. For every statement s, if s is true, then x knows that s and does not believe that not-s.[1]

If there are truths about future contingents, God, as an omniscient being must know these truths.  Since there are truths about the future, that is to say, since statements about future contingents are either true or false, and they are not all false, God must therefore know all truths about the future, which is to say He knows future-tense facts; He knows what will happen.[2]  One may try to avoid this reasoning by contending that future-tense statements are neither true nor false, so that there are no facts about the future.  Since the future does not exist, it is claimed that the respective future-tense statements cannot be true or false, simply without truth.[3]  To make this assertion is a misunderstanding behind the statement’s truth claim.  For a future tense-statement to be true it is not required that what it describes exist, but that it will exist.  In order for a future-tense statement to be true, all that is required is that when the moment described arrives, the present-tense version of the statement will be true at that moment.[4]  Nicholas Rescher gives an illustration for this assertion: 

January 28th, 2013

Q&A 8: The Logical Coherence of the Trinity

by Max Andrews

Q&A GraphicQuestion:

Max,

Do you know of any viable philosophical-theological conceptualizations of the orthodox doctrine of the Trinity which capture the fullness of the doctrine whilst not lapsing into the heresies of either Modalism, Tritheism or, of course, any form of Unitarianism? Thank you for all you do.

- B. P. Burnett.

Answer:

Brendan,

Thanks for your question! I chose this one for this week because I happen to use the Trinity as an example in my philosophy class when teaching logic, which I’m currently teaching. So, this is rather good timing!

To give a recollection for those who may not be familiar with the Orthodox doctrine of the Trinity and important heresies I’ve provided a simple chart: