Datascientisthasbeencalled“thesexiestjobofthe21stcentury,”presumablybysomeonewhohasnevervisitedafirestation.Nonetheless,datascienceisahotandgrowingfield,anditdoesn’ttakeagreatdealofsleuthingtofindanalystsbreathlesslyprognosticatingthatoverthenext10years,we’llneedbillionsandbilli