Oh, man, we do play testing quite a lot. And in fact um, sometimes the only deliverable out of a particular research project or an R&D project is just a play test, right; is just the data that we're going after. For example, some of the more live action role playing play tests that we've done, that's exactly what they were; they were play tests. So, yes, testing is something that we do quite often and quite a lot. Um, in terms of metrics based play testing, uh, in terms of where you're collecting data, building heat maps, things from that, unfortunately, that's just much harder in the - in the real world, right. If I make a um - if I make a multi-player game, I can instrument it with all of the different feedback. But if I have you know, six months to build a prototype for a live action role playing uh, experience inside a park, it's much harder to instrument that.So uh, in terms of play testing, we generally uh, we generally look at play testing as much more like interviewing and much more about the emotional response of people, and much less about the numbers and the metrics of things. Although, I really do wish that we could balance the two.