Note that the safety here actually crosses his legs at one point. Is this bad? Apparently not. It points up an interesting aspect of structured OJT using videos of real skilled workers on their jobs: that they may not be doing it the way the trainer says they should be doing it. Conventional wisdom is that you don't cross your legs, ever. So what do you do when the best performers cross their legs, because in this situation it's the quickest move and there's nobody around to give you a push whilst you're in the metastable state of having your legs crossed? This is an isssue that comes up again and again It will be resolved in favor of a Best Practices orientation, as data is gathered from inspection of videos of the organization's best performers.