The disabled persons' toilet in our local music school has a disco in it. No kidding: when you go in, different coloured strobes start to flash, a glittering ball spins and disco music plays. As I reflected on the implications of this for wheelchair-bound people, it struck me that for me, anyway, dancing at the same time as using the toilet for its usual purpose would be a bad idea.
The trouble is, I was then asked when one uses "whilst" as opposed to "while". Tricky one, that.