Adults, we are told, as much as children, become gibbering wrecks if deprived of their mobiles or iPhones for more than 15 seconds. The 2nd-century ad essayist Plutarch foresaw the problem.

In his essay ‘On being a busybody’, Plutarch takes a very strict line on man’s desire to be up to date on every last piece of news and gossip, especially what is ‘hot and fresh’ and, most important of all, scandalous.