When CDs were first introduced back in the 1980s, why were they only 16-bit/44.1khz? Why couldn't they be 20-bit/44.1khz or 24-bit/48khz? I'd rather have a 60 minute CD in 24-bit/48khz than an 80 minute CD in 16-bit/44.1khz. Did all the sound engineers agree that 16-bit/44.1khz is sufficient enough to capture the audio from analog master tapes??? Wouldn't that prove that so called "hi-resolution" music today is an over kill and not necessary or not discernible to the human ears?