As we return to the office and establish a ‘new normal’ of workplace etiquette, don’t underestimate the power of the humble business card It may have been the film version of Bret Easton Ellis’s 1991 novel American Psycho that first awakened me to the power of the humble business card. You know the one – where the antihero, Patrick Bateman, is forced to stifle a panic attack when he realises that his new bespoke cards – rendered in a colour called ‘bone’ and with type in the fictional font ‘Silian Rail’ – have been trumped by those of a more tasteful colleague, whose cards look almost identical. American Psycho is…