BS: Um - yeah, OK ((laughter))
DS: (I know) I can answer that, but there's a lot of thinking and discussion I think that goes on. Both with say education and public programmes and marketing I think and us. But also - most of the design and development to be honest is done with me and Darren. So we'll spend a lot of time thinking about discussing it. You know if one of use has got a particular idea then we'll kind of take that forward. We might have to test out something if we're not sure it's going to work so we'll get something knocked up. And then and also I tend to model stuff on the computer so we can get a rough idea of, of - how it'll work and also how it well look. And that's often how we actually do - the kind of aesthetic aspect of it is just by doing models on the computer. And then playing around with it and - it kind of goes hand in hand that you've got then you can look at it see how it's going to look visually but also you can mess around with how, is it all going to fit. Because you know, you know you've got a pump in it that's this big and you've got a - some other stuff that you've got to get in the cabinet and so just, it's just good to do it in a 3d model. Also we have done for some exhibits used external design - to do the visual kind of aspect and I'll do some drawings and stuff to give us some ideas and that.