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19 votes

How many Platonic ideals are there?

Although Plato's Theory of Forms presents as a consistent, "scientific" system of metaphysics, it doesn't really hold up under scrutiny, and there's a strong tradition of thought that it was ...
Chris Sunami's user avatar
  • 30.3k
12 votes
Accepted

Mathematical Platonism. Are numbers real?

By "real" here I assume, by your example, that you're talking about "physically real". And in that case real=experimentally_measurable. And that, in turn, means units. Even your ...
eigengrau's user avatar
  • 585
10 votes

Plato and the knowledge of the forms

I'm not sure Plato directly answers this question, but the dialogs clearly suggest the answer is yes. Plato frequently uses the metaphor of traveling closer or further away from the divine, immortal ...
Chris Sunami's user avatar
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10 votes

Mathematical Platonism. Are numbers real?

Asking whether a number, such as four, is real is like asking whether a word such as 'big' is real. The qualities which we think of as big are real. When we say a football stadium, for example, is big,...
Marco Ocram's user avatar
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8 votes

Mathematical Platonism. Are numbers real?

Mathematicians, specifically set theorists, have so little faith in the existence of numbers that they must posit an axiom for something even as fundamentally obvious as the existence of an empty set. ...
Hank Igoe's user avatar
  • 197
6 votes

In what realm do mathematics objects exist according to Platonists?

Interpretation of the Platonic forms is a big wrangle and may be undertaken in many ways. But the simplest answer to your question "in what realm" might just be to say everywhere or in every ...
Nelson Alexander's user avatar
6 votes

Did God "design" logic?

He could have made it so that 2 + 2 = 5, without modifying the meaning of "2" or "+" or "=" or "4" or "5" (i.e. keeping all of that exactly the same). ...
causative's user avatar
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5 votes
Accepted

Can set theory be non-extensional?

For sets, extensionality is defined as follows. ∀S∀T(S=T ↔ ∀x(x ∈ S ↔ x ∈ T)) All modern set theories have this as an axiom or theorem, so they are all extensional. Russel did not reject ...
David Gudeman's user avatar
5 votes

Mathematical Platonism. Are numbers real?

An interesting number like e, Euler's number, a 'constant of nature', as real as could be. It is known inexhaustively by many representations. Many discoveries and many perspectives, but never the ...
Chris Degnen's user avatar
  • 6,132
4 votes

Did Plato not believe in institution of marriage?

Conifold provides the reference, Republic, III.423e-424a. The rationale of Plato's proposals regarding marriage and the family is set out briefly by Julia Annas : Plato is not interested in the ...
Geoffrey Thomas's user avatar
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4 votes

Plato and the knowledge of the forms

When the Soul wants to experience something she throws out an image in front of her and then steps into it. Meister Eckhart There's an issue with your question. You say "his soul" ie "Plato's soul"....
Rushi's user avatar
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4 votes
Accepted

Does the Platonic triad originate with Plato?

No. Nor does it originate with other venerable authors commonly implicated, Plotinus, Aquinas, Ficino, etc. Plato's "triad", as read into Philebus, was supposedly Truth, Beauty and ...
Conifold's user avatar
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3 votes
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Was the idea of different physical realms advanced by other philosophers?

If you're specifically interested in other physical realms that aren't part of the same space that we inhabit (i.e. you couldn't get there by traveling some distance in space), this article talks ...
Hypnosifl's user avatar
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3 votes

Plato and the knowledge of the forms

Some priests and priestesses who have thought a great deal about explaining their concerns, say that our souls are immortal. A soul will come to an end which is called dying, but at another time be ...
Colin McLarty's user avatar
3 votes
Accepted

What evidence is there that Gödel believed the mind to be non-physical?

SEP itself refers to Platonism and Mathematical Intuition in Kurt Gödel's Thought by Parsons and On the Philosophical Development of Kurt Gödel by van Atten and Kennedy as the sources for this ...
Conifold's user avatar
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3 votes

Do any philosophers say surreal numbers are reason to doubt platonism?

A lot of mathematicians consciously hold on to Mathematical Platonism. For example, Penrose in The Emperor's New Mind said there appears: to be some profound reality about these mathematical concepts,...
Mozibur Ullah's user avatar
3 votes
Accepted

Is there an “algorithm” philosophy? Perhaps between relativism and pragmatism?

I'm not sure exactly what you mean, however... Algorithm is a term that is strongly associated with computer science these days, however any repeatable, goal-oriented behavior is algorithmic. As such, ...
J D's user avatar
  • 28.3k
3 votes

Why are abstract realms/the abstract realm thought of as being so orderly/restricted?

Note in advance: I am assuming that the abstract realm you're referring to is something along the lines of the "third realm" that Frege posited (alongside physical and mental domains). ...
Kristian Berry's user avatar
3 votes
Accepted

Are MUH and IIT compatible

IIT is essentially a flavor of physical monism. It presupposes that what we typically think of as the mental--consciousness--is a manifestation of a physical state. That, in itself, is not unusual. It'...
Chris Sunami's user avatar
  • 30.3k
3 votes

What did Plato and Plotinus mean by "beyond being?"

Here is the passage (Greek, English) quoted from Plato’s Republic (Emphasis J.W.) referring to "beyond being": καὶ τοῖς γιγνωσκομένοις τοίνυν μὴ μόνον τὸ γιγνώσκεσθαι φάναι ὑπὸ τοῦ ἀγαθοῦ ...
Jo Wehler's user avatar
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3 votes

Did God "design" logic?

There seems to be more than one question here. What is the origin of logic: is it the product of human design, or a natural feature of human thought, or is it supernatural in some way? What is the ...
Bumble's user avatar
  • 26.4k
2 votes

How is that any non-causal explanation of reliability is incompatible with the language- and mind-independence of mathematical objects

See Hartry Field's Realism, Mathematics, and Modality, Blackwell (1989), page 230: a realist view of mathematics involves the postulation of a large variety of aphysical entities - entities that ...
Mauro ALLEGRANZA's user avatar
2 votes

Is there any physics-model version of Tegmark's hypothesis?

Max Tegmark answers the question Is the physical world isomorphic to some mathematical structure? with the claim that "The physical world is completely mathematical" and "Everything that exists ...
Frank Hubeny's user avatar
  • 19.5k
2 votes

Nominalistically Finding Radioactive Half-Life?

One way to express the concept of half-life without math is to fill a see-through container with pennies, marking their volume on the side with a horizontal line. Shake the container and then spread ...
Bread's user avatar
  • 2,340
2 votes

How much platonism do I need to handle the halting property?

Any absolute statement about the future is subject to change. Will it snow where I am on February 19, 2020? That's impossible to say as of February 19, 2019. Will we find a contradiction in ZFC? ...
David Thornley's user avatar
2 votes
Accepted

How much platonism do I need to handle the halting property?

This is more a finitist vs non-finitist issue than it is about Platonism or formalism: Admitting that For no integer P(x) holds is sensible statement for a decidable property P is compatible with ...
Arno's user avatar
  • 978
2 votes

Platonism and causality

The relationship between abstract objects and platonic forms is obviously difficult, as is the relationship between modern (specifically mathematical) platonists and adherents of Plato's philosophy of ...
Julius Leist's user avatar

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