The desired: You select the topic of interest, put a tiny disk into a tiny slot and press upload. Knowledge floods into your head – every technique and trick and cool move all perfectly organized for total recall. “I know kung-fu.” With perfect mastery, you kick and tumble and flip through the air, dueling in such an exciting match, the spectators are at the edge of their seats. Your limbs blur, your opponent backs away struggling to block punch after punch. The duel ends wit