Cannabis really can trigger paranoia
The largest ever study of the effects of the main psychoactive component of cannabis suggests that it can cause paranoia in vulnerable individuals....Well, thanks for your outstanding documentation of the obvious, here's some other already existing data I found-
Marijuana can cause auditory processing problems. (you did notice that)
Hearing loss seems to precede paranoia. (that makes sense and explains a whole lot of Arizona now doesn't it?)
Schizophrenics have more ear infections than controls.
Marijuana also seems to exacerbate psychosis in individuals "familially predisposed" to schizophrenia.
Tobacco smoke has been shown to damage to the cilia that protect the Eustachian tube from infection.
That took me a couple hours. And I am pretty stoned...
Maybe you "experts" should do a little background and follow-up research in your subject area instead of alarming everyone with simplistic conclusions from your superficial and superfluous experiment.