The periodic table of elements had been used for more than two years, and its periodicity had been suggesting the arcanists and sorcerers that an atom was way more complex than they thought. When the senior level, including Morris, Raventi, and Gaston, gradually pointed out the problems and suggested the possible errors in atom theory, most middle and senior-rank mages started to feel suspicious of the theory.
In the closed training, Hathaway gave another heavy blow to atom theory established by herself using the discovery of the isotope. Almost all the middle and senior-rank mages had accepted the fact that atom theory might be wrong. As for the junior-rank mages and apprentices, accepting a new theory was not that difficult for them.
And it was even easier for the sorcerers and arcanists who did not specialize in the field of Element to switch their belief.