Jon Holmes isn't one to let a news story slip past him.
He heard reports, all the way from Canada, of Premier Brad Wall promising changes in the country's health and education system.
Of course, this made Jon wonder whether we need walls at all.
Lewis is very much against walls, and finds he just can't get about very well because of them.
"They get in the way of things, they stop you getting to things, they make me feel ill."
Gareth, on the other hand, thinks not having walls would be what caused him to feel unwell.
"Where will people get up to disgusting acts which I've told people I'm OK with, as long as I don't see them?"
Take a listen to the full debate and decide who you think is right about walls.