[aoshifo]

I was about to say "no", until I realized just how much I internalized this knowledge. In front-end you may be able to write decent applications without knowing that, but for CRUD apps it would say it is impossible to avoid.

I mean, it's something you will inevitably stumble upon. I'd say that even if you actively try to avoid learning how many bits go in a byte you will one day wake up screaming "Fuuuuuuck, I never wanted to know that there are 8 bits in a byte!!!!!" There, now you know, too!