cablectv connection

I'm actually pretty sure it has nothing to do with scrambling, that's an old technology. TV signals are now sent as digital mpeg4 so thus the need for the cable box. The local cable company stopped broadcasting analog so that they could use the bandwidth for digital channels, that's when the requirement for the cable box on each tv came in.... or a whole house system as I have with a main terminal and a satellite terminal at each tv location.