About 1 out of…
That’s pretty fucking normal.
P.S.: There is no such thing as the “fallacy of constitution.” Maybe you are thinking of the fallacy of composition. If so, you’re misapplying the term. (The fallacy of composition is the fallacy of presuming that properties possessed by each of the parts of a whole severally must be possessed by the whole as well.) Perhaps the phrase you’re looking for is “hasty generalization?” Ben’s comments don’t commit that fallacy, either, but at least the term would match the charge you’re making.
Anticopyright.