Re: QLC? It's not the one for me
and yet data 'digital' transmission for cable Internet and digital TV transmission gained massively from using QAM16, QAM64 and QAM256 etc.
This works by using analog levels to cram more bits into the signal, which itself is carried on a carrier wave.
All we care about as consumers is the end result, price, reliability, performance etc. If they make it work and it keeps working, the magic required, be it error correction or redundancy will not matter.
After all, the thought of the head distance to the platter for spinning rust and Giant Magnetoresistant heads had all the naysayers telling us it could never work/be reliable - I think modern hard drives are a miracle to this day.