[nayuki]

By spreading, I think you're referring to interleaving https://en.wikipedia.org/wiki/Burst_error-correcting_code#In... , which doesn't need randomness.

Pseudo-random scrambling is used in places like https://en.wikipedia.org/wiki/64b/66b_encoding to reduce the chances of many consecutive 0s or 1s which could cause clock desynchronization between the sender and receiver.

[aortega]

>By spreading, I think you're referring to interleaving https://en.wikipedia.org/wiki/Burst_error-correcting_code#In... , which doesn't need randomness.

I stand corrected!

[joshspankit]

> I stand corrected!

Heh