Do you remember hearing the joke about those technically challenged people who owned a VCR that had a clock that always blinked 12:00? For those of you who only know the world with modern day DVRs and on-demand video streaming services, you may not understand why TVs, VCRs, or Betamax machines all needed to have their own clocks. But, they were a crucial part of these devices, if you wanted to be able to watch a movie or television show “on demand”. You see, back then, this was referred to as “time shifting”.