Is it an outlet to let him get the wild climbing out of his system or a training ground for even more spectacular stunts elsewhere? That’s one of those big mysteries we can’t know the answer to. I can tell you that there’s a support bar for the climbing pole at the playground, which is about 8 or 9 feet off the ground, and young son swung out on it the other day (that is: hanging there with an 8 foot drop below). I got blamed since I use the bars to climb when he’s being a little too risky. On the other hand I was able to shoot up there and grab him using the same bars.