Years ago when diving was in it’s infancy many divers getting into it were ex military. A lot of them or most of them were also avid skin divers (freedivers) and hunters.
Scuba was very simple back then.
@Bob DBF can attest to the casual environment that was diving then. Many divers didn’t get certified until years later and many hundreds of dives. Bob was one of them. By the way Sam Miller was another and I’m sure there have been several through the years here.
Training came about because of a need.
A lot of divers were getting maimed. By that time the general public took an interest and no longer was it just a bunch of seasoned watermen throwing a tank with an Aqualung on their backs.
So everything progresses.
Once upon a time you could read the Science of Skin and Scuba diving, (later “The New Science if Skin and Scuba Diving”), find a pool somewhere and do all the exercises they outlined, plus read all the physics and if you had good reading comprehension and actually did the in-water skills to full competency and didn’t lie to yourself you could learn everything you needed to know.
Physics don’t change so technically this would work now, but being that we’re a scared bunch of paranoid little sheeple as a society we would never do that. We need an instructor.
Fine, understood, that’s modern society and that’s the way it is.
But just a parting word, if a friend teaches you and shows you the EXACT same open water course in the EXACT SAME WAY a certified Instructor would teach it, what is the difference??
Liability, and you might have to pay the certified instructor some $$$
That’s it.
I posted years ago about an idea to restructure diving certification where a third party certification only agency would issue diving certifications. You could learn to dive anywhere or anyway you wanted to, either from a family member, friend, self study, or a paid instructor. Then when you were ready you went to a place, paid your money and they tested you in an unbiased fashion to full WTSTC standards. If you passed the written and watermanship tests to full satisfaction then you got your certification.
So basically all it would be is separating the instruction side from the testing side to eliminate the fraud and corruption with instructors basically being the gate keeper and passing whoever they want to, (the way it is today).