Some Say   There are, some say, lives that we could have led, choices we could have made, a castle in Spain we could have occupied; we could have lain beside each other in Dylan’s big brass bed.   We could have savoured viands unlimited, depleted cellars stocked with rare champagne, breathed lungful after lungful of frangipane, and courted renown on steeds high-spirited.   There’d have been, of course, options other than these, with stations less extreme, fare less exotic, routines designed for a normal narrative.   And if people are free to pick the lives they please, with a…