TheBBC'sHorizonprogrammebeganin1964,andsincethenhasproducedfilmslookingatcomputertechnologyandtheemergenceof'artificialintelligence'.　　Ourdreamsalwaysbeginwithideologyandoptimism,onlyforthisoptimismtobereplacedwithsuspicionthatAImachineswilltakeover.However,astheHorizonarchiveshows,throughouteachdecadeoncewehavelearnttol...