Why do mermaids wear seashells?Ok, I have to ask, what is your mermaid joke? I'll take the bait... lol
'Cuz "B" shells are too small!
In Tide
The biggest hinderance to learning is fear. Fear can be seen in tenseness, anxiety, hesitation, breathing issues (getting floaty), and more. Little jokes and games help the student forget they are learning. To steal a concept from Baden-Powell of the Boy Scouts, I make my class a "game with a purpose". I mean, why even scuba if you're not having fun?
This is why putting the student in control ASAP is so important. A diver who cannot control their buoyancy is NOT HAVING FUN! Bouncing to the surface or flailing on the bottom is incredibly scary and frustrating. Fear retards and often stops the learning process. BTW, being cold is another fun killer. During the class you often see instructors make adjustments to a student's BC to help them out a bit rather than develop their skills to do it themselves. What happens after they pass the class without having that skill truly mastered? Their next few dives might very well be their last. No, not because they get hurt or killed, though that is possible, but because without having adequate control over their buoyancy and bouncing all over the place, they decide diving is not for them. White knuckle diving is never any fun.
Control = Fun.
No control = abject fear.
No control = abject fear.
This is why I consider trim and buoyancy as the foundation of diving. All the other skills are easy in comparison and their proper execution depends on a good foundation.