Theory 26/The rival says the effect is not there/Materials
Quantum or Good Enough?
The claim
Strongly correlated materials cannot be predicted classically at useful accuracy.
01The rival explanation
Improved classical functionals already reach useful accuracy, and the gap is engineering rather than fundamental.
02What would tell them apart
Errors should be systematic across correlated families, not random.
03Prediction
Classical methods should fail consistently on a defined family.
04Refutation
If errors are unsystematic and shrinking, the rival wins.