Is it a chair or a bed?
I went to the British Library yesterday and came across these chairs. Or are they chairs? Surely chairs are what you sit on. And beds are what you lie down on? So what exactly do you do on these things?

I went to the British Library yesterday and came across these chairs. Or are they chairs? Surely chairs are what you sit on. And beds are what you lie down on? So what exactly do you do on these things?
