Originally Posted By: FutureDoc
Greater than 20 does not mean 20.01. It could be 20.01 to infinity.
Greater than 20 means all greater than 20 (+/- whatever error bar there is in the test), up to infinity. That's a mathematical definition with no ambiguity. And any marketer (or anyone else) who's tried to fudge that when dealing with me in any of my businesses has walked away with some rather sore eardrums. And I don't apologize for telling them that they're innumerate, either. When someone comes out with mathematical nonsense, I will tell them. That's not ad hominem at all.
As for logic, logic would also tell us that other companies, notably competitors, have tested Fram's claims. Logic further tells us that if >20 microns in this case means 25 microns or 30 microns, the competitors would be shouting this from the rooftops since, despite my disapproval, Fram is the big name in the filtering world.
Logic also states that there could be no filter element in the cans at all, since particles that cannot pass the holes are >20 microns and all of them will be stopped. The only reason we see filter elements in the Fram Ultras cut apart by BITOGers is because of the same statistical anomaly that made BITOGers the only people subject to Purolator tears, a problem that doesn't really exist, either, right?