Maybe but the OP asked about dive equipemnt not GPS and cell phones. When it became impossible for you guys to prove that new is more efficient than old then we went to "effective" and when more effective could not be proven y'all branched out to GPS and Lycra vs rayon vs cotton, what's next, steel belted vs bias? Outboard motors or more efficient now, I agree there but alas like GPS, they are not dive equipment.
This is like some Dr. Seus book, y'all can never win becaue the OP's hypothesis is without hard, documented evidence, just antedotal hesesay. We "old grouches" will never be convinced you are right because we know better.
N
Well at least we are back on point.
Remembering the question I posed, Is modern scuba gear more efficient today than 20 years ago? and in the 3rd post agreed that the term effective was also appropriate. The fact that a few older divers disagree does not change the reality that gear has improved in twenty years, like it or not.
Some folks like driving around in old classic cars, dress in high waist plaid pants, watching reruns of I love Lucy, dial telephones and complain about the kids these days but for me, I like the new stuff and the kids these days.