AS: Yeah. Ok. So - so I do think by - there's a couple of things. It's not just about doing something interactive it's about the fact that people come here so it's a different environment and you know. So you're talking about schools it won't be their teacher who's presenting and if you're talking about the public, people have come out for the day. So there's all that sort of feeling of being somewhere else and it's - exciting you know. Because you've got a day off school or you're coming down for a day out on the Saturday or Sunday. And so the interactivity I think - and then you do the- you're somewhere where you know you can get really involved whether it's a demonstration in the science theatre or planetarium or whatever. Or it's an exhibit and I think - that's an important part of what we do because - well firstly people, I don't think people would come down if we - just had talks all the time. And certainly schools wouldn't and I don't think the public would be either. So I think it's a good way of - showing that we're different to being in school or, or you know - or being more sort of hands on something. It's a bit of everything really.