Originally posted by Leonhard
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No that isn't Munchhausen trilemma's conclusion. The conclusion isn't that all logic is circular. That would be a ridiculous conclusion. The conclusion is that all deductive logic is based either on arguments that are based on other conclusions (regressive arguments), or are based on axioms (axiomatic arguments) or is circular logic.
Circular logic is always fallacious.
Axioms aren't dogmatic assertions. They're simply the basic points of deductive reasoning. However deductive reasoning isn't the only kind of reasoning we have. If we were only able to reason deductively we wouldn't be able to deduce much of anything useful at all and we would be nowhere. Deductive arguments however are a good tool for both exploring what presumptions exist in a conclusion, and what can be concluded from something, or whether a particular argument contains fallacies. That's why it is useful.
The kind of logic I proposed derives deductively from some axioms which are entirely reasonable to hold, and from that makes conclusions about morality. The question then is whether I have good reasons for holding these conclusions, but again, that isn't a circular argument. It would only be a circular argument if I used the conclusion to support the conclusion.
I asked you about Bahnsen and Van Till. Because they became very obsessed with something they called 'golden circular logic', though ironically their arguments aren't circular at all (some of their apologetics were). And since Van Till so insisted on 'circular logic' and Bahnsen being his disciple never said anything that contradicted Van Till, and both of them were highly influential, there's a lot of garbage floating around about circular logic being valid. Even though it in no way is inherent to the kind of argumentation that Van Till laid out, which is basically the transdendental argument for God.
Circular logic is always fallacious.
Axioms aren't dogmatic assertions. They're simply the basic points of deductive reasoning. However deductive reasoning isn't the only kind of reasoning we have. If we were only able to reason deductively we wouldn't be able to deduce much of anything useful at all and we would be nowhere. Deductive arguments however are a good tool for both exploring what presumptions exist in a conclusion, and what can be concluded from something, or whether a particular argument contains fallacies. That's why it is useful.
The kind of logic I proposed derives deductively from some axioms which are entirely reasonable to hold, and from that makes conclusions about morality. The question then is whether I have good reasons for holding these conclusions, but again, that isn't a circular argument. It would only be a circular argument if I used the conclusion to support the conclusion.
I asked you about Bahnsen and Van Till. Because they became very obsessed with something they called 'golden circular logic', though ironically their arguments aren't circular at all (some of their apologetics were). And since Van Till so insisted on 'circular logic' and Bahnsen being his disciple never said anything that contradicted Van Till, and both of them were highly influential, there's a lot of garbage floating around about circular logic being valid. Even though it in no way is inherent to the kind of argumentation that Van Till laid out, which is basically the transdendental argument for God.
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