text:  And I really do love it when you get in touch. This show is a discussion, really, and they always seem to work better when they're broadened out. So last week we were talking about how we all see differently inside our heads, specifically talking about synesthesia, which is where people attach colours to various things. It's kind of cross-modal senses. You get sort of, I don't know, colours attached to days of the week or numbers. And we got this letter.