Different circles I guess. We were doing REM in the 80s, Rads were the 70s, and Roentgens were from the 50s and 60s, at least from my sphere of influence at the time. I must've missed the memo about switching the acronym, though.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)