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Comment: Re:I thought the distinction was arbitrary already (Score 2) 57

by Khashishi (#48413873) Attached to: Laser Creates Quantum Whirlpool

Matter has mass, but not all that has mass is matter. There are several types of polaritons, and some of them are clearly not matter, even though they have mass. Phonon-electromagnetic wave quanta are clearly not matter. Moreover, you state that light has no mass, which normally I wouldn't disagree with, but in the context of polaritons, what about light propagating through nonlinear media? I think it's totally appropriate to say it is massive.

Comment: Re:This isn't about technological developments, (Score 1) 200

by Khashishi (#48405661) Attached to: A Worm's Mind In a Lego Body

If, by an animal, you mean a fully developed cat or dog, then I'd argue that the animal has already reached a higher level of neural complexity than a human fetus at 20 weeks. (I can't back that up with biological data, but fetuses at that age aren't really capable of doing anything.)

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