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A byte is not always 8 bits on old machines, though it is standardised as 8 bits nowadays.

This is why network RFCs talk of "octets", to avoid the ambiguity. Octets are always 8 bits.

https://en.wikipedia.org/wiki/Octet_(computing)

The definition of a byte today is different than the definition of byte when those machines were manufactured. Just like how 'foot' is now standardized(*)

(* technically, a 'foot' is not a standard unit of measure but that's due to the long history of 'foot' not being standardized until relatively recently)

No. 8 bit bytes are the de facto standard but that is in no way official nor the definition of the word. You can find modern niche projects with non-8-bit bytes (and by extension non-32 or 64 bit words).

I didn't realize that there was a 16 bit name called a 'chomp' haha. But more formally hextet.

That is false. A byte is the base grouping and a word is the native size for a given operation. Some architectures even expose multiple word sizes. (TBF the entire concept can be quite fuzzy depending on the implementation.)

I think you might be missing the attempt at humor.