When you teach a class, you go over what the student has learned through outside reading. You do something similar when you check out a student who has completed eLearning. Signals, including thumbing the dive and indicating that something is wrong, are in the first section of the PADI class. Both signals are on the final exam.Point being, show me from the OW course where any student can "thumb" a dive. Where is that taught in any OW course? I need documents, not opinions or clips from the internet or magazines.
One of the things that is taught is that thumbing the dive is a "command signal." If it is given, it must receive a response. The buddy returns the thumb. The dive is over, and the buddies ascend. This makes two points obvious.
- An instructor who does not in some way point out that something being wrong is a reason to end the dive is a babbling idiot.
- A student who does not understand without being told that something being wrong is a good reason to end the dive is equally idiotic.