My guess would be the first, teaching a welder to dive. I base that on the fact that the core value, the welds, will be higher-quality and that's more importan

My guess would be the first, teaching a welder to dive. I base that on the fact that the core value, the welds, will be higher-quality and that's more important than the diving execution. The diving might be off, but it shouldn't be that hard to learn well enough to survive and be effective. Of course, I'm neither a diver nor a welder. Did I win?