Bob Weir’s death was surprising but not a shock. Grateful Dead fans have had plenty of practice saying fare thee well to other band members, most prominently Phil Lesh, Jerry Garcia, and Ron McKernan (aka Pigpen). Weir, who died Jan. 10 at 78, kept the Dead spirit alive after Garcia’s death in 1995 (just after turning 53), and with his passing the band’s music moves into a new realm. Never again will it be performed by the people who created it (holograms need not apply). A veil of sorts has