My spouse has just brought to my attention an interview conducted by Jon Snow on Channel 4 last night. Carefully probing two professors about the flare-up of the coronavirus in Leicester, he let science lead the discussion. That picks up on my writings yesterday about the need for good quality, non-political advice closely available to political decision-makers. Young Jon Snow, he's nearly a year younger than me, is a cool head in a crisis. When I've met him, I have been impressed by his listening skills, his ability to pick the necessary essence of what's been said by his interviewee and test it. What struck me quite quickly was a coincidence of name. One the founders of modern epidemiology was John Snow. He was a physician who conducted a statistical analysis of cholera infection and linked it to a contaminated water supply. Famously the street water pump in Soho was disabled in 1854 and within three days cases dropped off. A further pointer to water being the pro...