Seems to me that this thread has veered, as perhaps was inevitable, into debate about Trump. Moderator, is this acceptable? I vaguely (getting old you know) recall something about politics and religion...
As to the point, if there was one, of the original post, I can attest that cannabis seriously screws with my IQ. But only temporarily. Which, as I recall, is pretty much what the research actually says, at least for adults.
Happy toking peeps, enjoy your IQ reduction while it lasts.