A divemaster once told me that the best training he ever had for recreational diving was doing a technical diving course, because knowing your limits was no lon

A divemaster once told me that the best training he ever had for recreational diving was doing a technical diving course, because knowing your limits was no longer something optional. The written test for open-water felt inadequate to me; I expect most reasonably smart people could pass it without any study, what with only needing 75% on multiple choice.