Hiya!
Let's start with definitions
In my atheist days I was a pragmatic empiricist: I think most atheists are. Now I'm a rationalist, which I suspect many theists are actually. I know what you mean though, rationalist is often used as a synonym for sceptic - and I'm certainly a process sceptic. I'm using it in it's sense in Philosophy here.
An Empiricist derives knowledge from their senses, to quote wiki "empiricism is a theory of knowledge emphasizing the role of experience and evidence, especially sensory perception, in the formation of ideas, while discounting the notion of innate ideas." I associate it with much experimental and natural science. One tests things for yourself, and relies upon the evidence of ones senses, or repeatable observation and experiment. The problem is that one then has to infer the meaning of the data, and obviously the process of interpreting the data is not strictly reliable but very much a human process, no matter how good the data or perfect the experiments.
A Rationalist follows a method "in which the criterion of the truth is not sensory but intellectual and deductive" The Theory of Evolution is a triumph of deductive logic - it is rationally, not empirically, demonstrably true. You can look at empirical evidence, the fossil record, but the deductive process of working out what it signifies is a rationalist endeavour. The evidence which makes up the theory can be observed, but the theories truth lies outside of demonstration by anything other than logic and evidence: deductive reasoning. So a rationalist starts from certain
a priori principles or evidences, and argues deductively from those onwards - which is how whole systems of theology have arisen, but also maths, much modern physics, geology, etc, etc. It's ok, so long as logic works on your subject (iffy when dealing with say human behaviour) and
your initial premises are sound.
It's logical, but if it's built on flawed premise, it is not rational or reasonable.
Nope. Rationality is a property of the method used to derive a conclusion, the argument, that is the
process used to arrive at the conclusion, not of the conclusion itself.
This argument is rational
1. Premise: All jimjoms are flibflabs
2. Premise: All flibflabs are poodlicoks
3. Conclusion: All jimjoms are poodlicoks.
Nowt irrational or illogical there. The conclusion remains nonsense, but it remains rational. I agree it might not be reasonable. I agree we might have problems finding empirical support for it. It is not however irrational.
thaiboxerken said:
CJ said:
It does not look much like a God to you or me - it looks like a First Cause.
That's because that's all it's doing, trying to establish that there must've been a first cause. Of course, they call that "god" and then try to use this as "evidence" that their biblical god exists. It's entirely irrational and illogical to do so as well as dishonest.
Oh it's not dishonest exactly The God thing only arises because it's a traditional Proof of God (proof in the sense Neltana gave) - something must have started the whole shebang. It does not show us that the thing was teleologically minded, ie. it designed, was intelligent, or bore any resemblance whatsoever to the Biblical God, or any other God (well maybe some forms of extreme deism.) I have at no point claimed it shows a Biblical God, as i'm sure you appreciate. It does however demonstrate one of the supposed characteristics of the Biblical God, or God of the Greek Philosophers - a first cause, an unmoved mover, or if like me you are a bit of a Zodiac Mindwarp fan, a Prime Mover. (Can I link Youtube rock videos?
http://www.youtube.com/watch?v=mtnCcWOS7y8 - Probably not work safe, but a Theology class classic!)
Thaiboxerken said:
CJ said:
String Theory in some forms is completely rational. It's not empirically demonstrable.
It's mathematically demonstrable, is it not? It's based on empirical observations and evidence, right?
Mathematics is by it's nature a rationalist enterprise, but not an empirical one. You'd be hard pressed to show me the square root of -1, or even a zero. String theory is
deduced from empirical evidence, but can not be falsified or empirically tested a this time. I don't think it's
irrational to believe in it - it clearly isn't - but positivists like Lee Smolin would point out that as an unfalsifiable hypothesis it is dubious as to whether we can call it a scientific hypothesis at this time. It is definitely not currently supported by any predictable empirical observations - hence me using it to demonstrate some of the issues.
Thaiboxerken said:
CJ said:
The Theory of Evolution is completely rational. It's not empirically directly demonstrable.
Yes it is.
Not so. You can not observe the development of a species in to another species. We both agree it happened (I'm assuming you are not a Creationist -as you may have gathered I'm not) but we have no direct way of observing it, or experimenting on Natural Selection. So we
deduce from the evidence in the fossil record and genetics etc, etc, its truth - a rationalist enterprise. It however should allow for predictions to be made, and hence stands.
Thaiboxerken said:
CJ said:
The Big Bang is completely rational. It's not empirically directly demonstrable.
There is empirical evidence to support the Big Bang.
There is indeed - Cosmic Background Microwave Radiation, which finally put paid to Hoyle's Steady State hypothesis. Yet we can't create or observe the Big Bang, only the evidence. The Theory is a rational development based upon the evidence, but not empirically proven, but deductively created and its logic confirmed by predictions which were subsequently observed to be true.
Thaiboxerken said:
CJ said:
Religious theologies may be completely rational. They are not It's not empirically directly demonstrable.
There is no empirical, mathematical or scientific evidence to support such ideas.
Really? Firstly, how would we know? As I wrote elsewhere ""I think many of the problems which lie in the way of an understanding of the case are just down to language. I will define my terms. Firstly, I believe we live in an objective universe that we all experience (denying solipsism), that there are ultimate truths (deny theories of absolute relativity of reality) that can be rationally understood. These a priori requisites are shared both by Theism and by Science, and all systems of knowledge; without them it's just "magic", and nothing is ascertainable. Secondly, I define Natural as the universe and everything therein, and Supernatural as that existing "outside" or "above" the Universe - the literal meaning of the term.
My first contention is that any Supernatural action within the Universe is by definition therefore Natural, and will manifest in terms of Natural Law. That manifestation may be highly unusual, or extremely rare, but it would not be as in Hume's famous definition of a miracle a violation of Natural Law, as by definition anything that occurs in Nature is Natural.
Therefore, I contend that supernatural causation would be effectively invisible to our naturalistic Science, which by definition is bounded by the natural. While logic and reason (and perhaps mathematics) might be used to explore what lies "beyond" the Universe, experimental and procedural science can not. As a "supernatural event" becomes natural by definition as soon as it occurs in the universe, Science will indeed find no "miracles" - which is not to say that supernatural interventions do not occur. One could only hope to establish if this was the case by logic or reason. Professor Dawkins has suggested that the law of Nature in a Universe created by a deity should look quite different from those in one without - but that we will have to address later.
Let me give a playful example. Let us assume that the Norse Trickster God Loki built the universe. His handiwork is the Laws of Nature, and any examination thereof will reveal nothing but Natural forces acting in accordance with Natural Law. Any arbitrary exception he introduced, such as the Duckbill platypus (I know it's quite explicable really, but you get my point!)would be quite Natural, and entirely explicable by Science. Then imagine a Scientist who looks at the world and says "There is no Loki". Yet equally rational is the Loki-ist theologians, who looks at the same Science and says "we can not see Loki, but we can learn the nature of Loki from his handiwork!" The Loki-ist might remark after JBS Haldane that Loki appears to have "an inordinate fondness for beetles!"
The clear problem therefore is not if there is evidence for Theism - there may be much - but in how one would find and understand that evidence. I would argue that reason and logic (rationalism) should work as well on understanding the Gods as any other thing: the locally prevailing conditions just differ, just as Quantum Mechanics seems counter-intuitive to us whose experience is limited to Classical Physics in a day to day sense, and the local earthly form thereof. The pragmatic empiricist however might struggle in vain to see any evidence at all - which in no way precludes it's existence"
Dunno if that helps at all. And i still don't think I'm an idiot.
cj x