Search found 957 matches

by Speakpigeon
Thu Jul 25, 2019 2:51 pm
Forum: Philosophy of Science
Topic: Why still no science of logic?
Replies: 43
Views: 1212

Re: Why still no science of logic?

Most people, at least those not terminally biased by a training in mathematical logic, would agree on the validity of the Modus Ponens, on the validity of Aristotle's syllogisms, on the validity of de Morgan's laws, etc. I think there are at least 50 logical laws that most people would agree on and...
by Speakpigeon
Thu Jul 25, 2019 2:48 pm
Forum: Philosophy of Science
Topic: Why still no science of logic?
Replies: 43
Views: 1212

Re: Why still no science of logic?

I think there are at least 50 logical laws that most people would agree on and they are not going to go away just because you say "not objective" or something. But the 'laws' of logic do go away if you just ignore them, or tweak the context. Very much unlike gravity. What you seem to call 'laws' a ...
by Speakpigeon
Thu Jul 25, 2019 2:41 pm
Forum: Philosophy of Science
Topic: Rationalism v. empiricism
Replies: 92
Views: 1437

Re: Rationalism v. empiricism

Without observation of empirical reality, reason almost immediately leads to falsehoods and idols of the mind. Sure, since your own mind is an empirical fact. And without rationality, empiricism definitely leads to "falsehoods and idols". Once you get that we are all ultimately empiricists. I'm not...
by Speakpigeon
Thu Jul 25, 2019 1:34 pm
Forum: Philosophy of Science
Topic: Rationalism v. empiricism
Replies: 92
Views: 1437

Rationalism v. empiricism

The difference between rationalism and empiricism is in the method of proof. Empiricism requires, by the conventional definition and usual understanding of the term, that the proof of your claim be an observation of the material world. Rationalism requires instead that the proof of your claim be an ...
by Speakpigeon
Wed Jul 24, 2019 8:40 pm
Forum: Epistemology - Theory of Knowledge
Topic: Justified true belief: knowledge and the myth of propositions
Replies: 65
Views: 4664

Re: Justified true belief: knowledge and the myth of propositions

The problem of induction - that the future need not be like the past - doesn't affect the way things are now: the earth does orbit the sun - from which we can deduce true conclusions. You are assuming the conclusion. Affirming the consequent. The question is what are the conditions of propositional...
by Speakpigeon
Wed Jul 24, 2019 8:24 pm
Forum: Epistemology - Theory of Knowledge
Topic: Justified true belief: knowledge and the myth of propositions
Replies: 65
Views: 4664

Re: Justified true belief: knowledge and the myth of propositions

The Gettier problem is that some cases of justified true belief don't amount to knowledge, so the JTB definition is inadequate. But I suggest that Gettier-cases really demonstrate the muddle caused by the myth of propositions. I know that my cat sits on the sofa. I know that p. That si, I know that...
by Speakpigeon
Wed Jul 24, 2019 7:55 pm
Forum: Epistemology - Theory of Knowledge
Topic: Why I lost respect for Aristotle
Replies: 14
Views: 819

Re: Why I lost respect for Aristotle

It makes very, very, very little sense for you to assess as you do Aristotle's potential merits against today's standards. If it was possible for you to prove that you would have done better than Aristotle had you been born in his time, you would have had a point. But you can't do that. The only way...
by Speakpigeon
Thu Jun 20, 2019 4:33 pm
Forum: Philosophy of Science
Topic: Why still no science of logic?
Replies: 43
Views: 1212

Re: Why still no science of logic?

Most people, at least those not terminally biased by a training in mathematical logic, would agree on the validity of the Modus Ponens, on the validity of Aristotle's syllogisms, on the validity of de Morgan's laws, etc. I think there are at least 50 logical laws that most people would agree on and ...
by Speakpigeon
Wed Jun 19, 2019 8:56 pm
Forum: Philosophy of Science
Topic: Why still no science of logic?
Replies: 43
Views: 1212

Why still no science of logic?

Why no science of logic? By logic, I mean deductive logic. By science of logic, I mean a scientific investigation of logic as objective performance and manifest capability of human beings, investigation that would try to develop a formal model of logic which would be accurate and operational. I can'...
by Speakpigeon
Tue Jun 18, 2019 8:09 pm
Forum: Metaphysics
Topic: What is time?
Replies: 315
Views: 6667

Re: What is time?

Still, assuming as you do that time doesn't exist, what then makes two clocks stay (broadly) synchronised? I could ask a similar question about space, of course, but maybe answering the one about time will provide an answer to the one about space. So, do you know? Nothing makes them stay synchroniz...
by Speakpigeon
Wed May 29, 2019 8:47 pm
Forum: Metaphysics
Topic: What is time?
Replies: 315
Views: 6667

Re: What is time?

Speakpigeon, clocks are synchronised because we agreed to synchronise them. I didn't ask why clocks are synchronised. I asked why they stay broadly synchronised. We agreed on the criterion for synchronising clocks. So, what's the criterion? Say we have two clocks. We synchronise them and we watch t...
by Speakpigeon
Wed May 29, 2019 8:42 pm
Forum: Metaphysics
Topic: What is time?
Replies: 315
Views: 6667

Re: What is time?

jayjacobus wrote:
Tue May 28, 2019 7:42 pm
Speakpigeon wrote:
Tue May 28, 2019 7:25 pm
jayjacobus wrote:
Tue May 28, 2019 6:51 pm
Time cannot exist without a function to create it.
Why not?!
Because it progresses.
???
Time progresses?!
Whoa.
Relative to what?
EB
by Speakpigeon
Wed May 29, 2019 8:39 pm
Forum: Metaphysics
Topic: What is time?
Replies: 315
Views: 6667

Re: What is time?

What is time? Time is the relationship between the motion of entities. Just as length or distance and direction are the static relationship between entities, time is the relationship between entities when either their distance or direction from other entities changes (moves). Time, like length and ...
by Speakpigeon
Tue May 28, 2019 7:39 pm
Forum: Philosophy of Mind
Topic: Do humans have a soul?
Replies: 215
Views: 6811

Re: Do humans have a soul?

Your elbow joint, Immanuel, is directly experienced and also objectively observed in action by yourself. Unlike your elbow joint your brain has no proprioceptors so you cannot observe your own brain in action. If your brain had proprioceptors you would no more attribute a spirit to your physical br...
by Speakpigeon
Tue May 28, 2019 7:25 pm
Forum: Metaphysics
Topic: What is time?
Replies: 315
Views: 6667

Re: What is time?

jayjacobus wrote:
Tue May 28, 2019 6:51 pm
Time cannot exist without a function to create it.
Why not?!
EB