The best, most plausible-seeming description I've encountered is that autism is a collection of imperfectly correlated traits. One may be able to make "often"

The best, most plausible-seeming description I've encountered is that autism is a collection of imperfectly correlated traits. One may be able to make "often" and "usually" and "sometimes" statements, but probably not "always"/"never" statements. Is there a better description out there that manages to be true to reality?