Hiya, I went and looked this up for you:

" Intel segmented memory

This usage should not be confused with that of the x86 memory segmentation used by early Intel processors such as the Intel 8086 and Intel 8088, as they did not provide any protection. Any program could access any segment with no restrictions, and a segment consisted of only a starting location and a fixed length of 64 KiB. Segmentation in the Intel 80286 and later provided protection. "

I think Dr Turner's description of segments is a bit rough and ready; I guess he was just trying to make the post simple.