Meaning of “unqualified” in this sentence

I. She goes to school.
II. She may/must go to school

As a main clause, [I] is a characteristically used as an unqualified assertion. She may go, by contrast, indicates that the situation possibly obtains or is permitted, while […].

(The Cambridge Grammar of the English Language)

What does unqualified mean?

Answer

“Qualify” originally meant “cause (something) to have a particular quality” or “attribute a particular quality to (something)”. Over the centuries the sense has broadened to mean, among other things, to “(cause to) acquire the particular qualities necessary” for something or to do something, and that is the sense in which you will usually encounter the passive participle: typically, some is or is not qualified for a particular job.

In this case, however, it is the original meaning which is employed. An unqualified assertion is one to which no limiting quality has been attributed: “This is a fact—not possibly a fact or a particular kind of fact or a fact under such-and-such circumstances, but simply a fact.”

Attribution
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