Yes, my first response was satirical, but there is a very serious point to it. You should not need to ask this question after having taken a course like that. I took the PCI/PSI course for the first time a number of years ago, along with almost all the other instructors associated with the dive shop where I worked. We spent the day primarily looking at pictures of exploded tanks. At the very end, the guy had us look at some tanks for about 30 minutes. We were already running late when that episode started. Our Course Director made sure the guy knew in no uncertain terms how unsatisfactory he thought the workshop was. I then let my certification lapse and had to do the full workshop over again, this time with a different presenter. Once again we spent an entire day on unimportant stuff, including about 20 stories with the purpose of making sure we know that everyone in the world thinks PCI/PSI is the greatest organization in existence. This time we had even less time to do any actual inspection work, and, once again, that part started after the workshop was supposed to be over.
I will keep saying things like this until PCI/PSI gets the message. Their workshops need to focus on teaching participants how to evaluate tanks so they can walk out of it knowing how to deal with what they will see when they do visual inspections.