Every so often there's an outbreak of korektitis - you know the argument over whether korekta can mean correct or whether it can only mean corrective or correctional.

Such an outbreak occurred recently in a thread in the Esperanto forum.

Underlying this malsano is the idea that Korekt is a verbal root and roots must have a fixed grammatical class.

It occurred to me this morning that fans of the grammatical class theory might still be able to rescue the theory by declaring Korekt not to be a verb or an adjective or a noun but to belong to another class.

Maybe the derivations would all seem regular if korekt were declared to be adverbial, or even to belong to a fifth class.

The issue is some verbs are "to make X" while others are "to be X."

Ferma means closed, but Fermi means to close, not to be closed. If verbs that could also be used as adjectives were standardised as "to be" instead of occasionally being "to make," things would be easier, and korekti would be "to be correct" (like how perfekti is "to be perfect") and korekta would be "correct" and korektiga would be "corrective/correctional."

Either way, we have the advantage of being human and being able to use context and/or skip over minor ambiguities and continue functioning, so I guess it's not a huge deal.