Philosophy of chemistry
one could debate the moral merits of being an ionic bond vs. a covelent bond. I'm sure some salts have serious idenity crises. Am I Sodium, am I chlorine? in water I'm both but neither. what am I???
Wavefunctions tend to zero only at infinite distance, so we're all connected. Interactions between atoms are endless, and not formal, reaching out to interact at far flung distances because there's no such thing as a "bond", only electron density. There is no "you" because you're just part of the Grand Thing.
See, we can play a semantic game with "what is a substance" and where the boundaries between them are, but it would just be a semantic game and nothing more.
Even more so with the (badly understood by me) lines that "one electron is everywhere at once" or something of particle physics.
I'm so sure new agers jumped on the quantum physics band wagon the day it "came out".