The story I heard was that, shortly before his death during the filming of Blade Runner, Dick had a dream where he saw Harrison Ford utter the immortal line "Freeze, or you're a dead android" - which is why I still have the still of Decker holding his gun in front of the immobile Pris just before she starts wailing on him. He woke up in a cold sweat and raced down to the studio and had his concerns laid to rest. via boing boing