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Post 40

Saturday, August 3, 2013 - 9:28amSanction this postReply
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I wrote, "I would say that it is induction insofar as one came to that understanding by reasoning from particular instances of ice and water to the generalization that 'All pure ice floats on a larger volume of pure water, ceteris paribus'."

Elliot replied,
But it does not logically follow from the particular instances. You only believe it due to good physics explanations (plus the instances they reference).
Ah, but those good physics explanations are themselves based on particular observations.
Will you answer the question about what your intended point is?
I'd be happy to, Elliot, although I thought it was obvious. Your guru, Mr. Popper, had this to say: "Our theory rests on an asymmetry between verifiability and falsifiability which follows from the logical form of generalizations; for although these are never derivable from particular statements, they can stand in contradiction with them." (Logik der Forschung, 13)

Not true. The generalization about the buoyancy of ice follows from particular observations, as does the generalization about certain anatomical features of swans. We cannot observe all instances of ice, nor all swans that will ever live, but we can nevertheless justify certain universal statements about them.


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Post 41

Saturday, August 3, 2013 - 3:24pmSanction this postReply
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This is why engineers/scientists have such trouble when forced into taking liberal arts courses; they are filled with going nowhere nonsense just like this.

An engineer/scientist understands the essence of the ice/water assertion: "under the influence of hydrostatic forces only, a volume of lesser density displacing that volume in a medium of greater density in a gravity field will experience a net buoyant force opposite the gradient of the gravity field." He's not going to gaze into his naval worrying about some coming universe where the opposite will happen, or the ice will scoot sideways, or some lout freezing 'heavy water' and watching it sink in 'not heavy water' and then gleefully claiming "see! NOTHING IS CERTAIN IN THIS WHACKY UNIVERSE..." claims to have found some fundamental truth in some local little cul de sac of going nowhere fast.

Why no. He's going to observe 'what happens if you dump the frozen heavy water ice cube in a medium of heavy water?'

...and not worry about bullshit word games played mostly by folks who mostly -talk- about -actually- doing things in this universe from great, great distances away from the -mere- processes of actually doing things in the universe...

regards,
Fred





Post 42

Sunday, August 11, 2013 - 11:31amSanction this postReply
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Fred,
"under the influence of hydrostatic forces only, a volume of lesser density displacing that volume in a medium of greater density in a gravity field will experience a net buoyant force opposite the gradient of the gravity field."
You rascal! You took the words right out of my mouth. That is exactly -- i.e., "to the letter" -- what I was going to say (but you beat me to it).

:-)

Ed


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Post 43

Tuesday, August 13, 2013 - 7:09amSanction this postReply
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It sort of rolls off the tongue, doesn't it?



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