BS: Is there anything you can particularly remember about that visit?
JC: Nothing specific. I remember enjoying it. I have vague memories of Puff but I don't actually - as an adult I don't know whether it was there then but I have vague memories of Puff being there. And also - and of - um - what was it? - I can't remember what it's called - it's a triangle that you walk through but it looks as if it's solid - and it's and it's not so you get that and you come through on the video and that was sort of quite exciting. And the other one was - Polarising - so you can see stress fractures so they sort of came up as rainbows or something. I don't think I understood it but it was really fun to do. ((laughs))