Adobo
Contributor
I completely agree with you, Adobo, about the things that are left out of a basic OW class, gas planning being one of them. Although Peter makes his students go through SAC rate calculations after their OW dives, and has them look at what those numbers mean for tank duration for the depth of diving they're certified to do, he doesn't go through the concept of rock bottom or planning for available gas. Those things ARE part of his Nitrox, AOW, Deep, and Rescue classes -- in other words, just about anything more advanced than OW.
But I've seen GUE divers start a technical dive without a head-to-toe equipment check, and seen LOTS of them start a recreational dive without doing it -- including GUE instructors. NOBODY is exempt from complacency and laziness. The difference in our culture is that it's acceptable to call people on it (although in the case of the tech dive, I got some pushback).
Can we at least agree that fundies and essentials (as well as other equivalent classes taught by other people) can do a lot for curing ignorance regarding gas planning, gear check, proper weighting etc.? And that these classes are necessary because of the two weekend open water certification classes leave a lot of holes that need to be filled?
With regards to people entering the water without a proper gear match and other basic pre-dive checks, well, as doppler says, you can't cure stupid (not even with essentials or fundamentals).