After the group discussion I met with each of them for 15 minutes and, if at the start I looked like the perky spiffed up Gnarls (above), by the end of it I was wiped out. Part of it, undoubtedly, was the effort of communicating through masks - speaking as well as listening. But it dawned on me that another part was the information overload of all of the students which wasn't masked, all those bodies in space, clothes, bags, shoes, movements... I've always been bemused by the specious specificity of the claim that it's "93% of communication" but I guess I'm intoxicated by the rush of the nonverbal.