Intelligibility

Without this last feature, science has no general intelligibility and has the appearance of being an esoteric possession of a few individuals, an esoteric possession because in the first instance it is only the essential principle or notion of science, only its inner nature that is to be found, and a possession of a few individuals because at its first appearance its content is not elaborate and expanded in detail, and thus its essence is turned into something particular.

Only what is perfectly determinate in form is at the same time exoteric, comprehensible, capable of being learned and possessed by everybody.

Intelligibility is the form in which science is offered to everybody and is the open road made plain for all.

To reach rational knowledge by our intelligence is the just demand of the mind which comes to science.

For intelligence, understanding, verstand, is thinking, pure activity of the self in general, and what is intelligible, verstandje, is something from the first familiar and common to the scientific and unscientific mind alike, enabling the unscientific mind to enter the domain of science.

It's not the same.

Intelligibility is how well you're understood.

So if a kid is 50% intelligible to me, I can understand 50% of what they're trying to say through their babbles and whatnot.

So here's the rule.