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Prothero wrote:Well as it turns out, on the quantum scale, even "object permanence" is highly questionable. Matter at least as a "particle" may only exist when interacting or being observed. Flux and change, impermanence is the nature of the world. Nothing is permanent but change.
but a difficulty I often run into is that non-philosophical people will argue different ideas at different times and in different contexts.
Belindi wrote:I think that Plato described idea permanence when he described the Forms. The allegory of The Cave tells how a man left the others in chains in the cave, watching shadow play while he went out of the cave into the light and viewed permanent ideas, which Plato called the Forms.
-- Updated June 19th, 2017, 4:54 pm to add the following --
Lucius wrote:but a difficulty I often run into is that non-philosophical people will argue different ideas at different times and in different contexts.
Different ideas at different times and in different contexts are relative ideas, i.e. relative to the times and the contexts, often social contexts.
Me, I don't believe in permanent ideas although I long for them. This is a relative world. If there be a God then He would not only know permanent ideas but would essentially be permanent idea. God- believers call God "Rock of Ages", which must be comforting.
I am not sure about mathematical ideas, which is to say that I don't know what is the knowledge status of mathematical ideas .
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