The window is an index into a consecutive block of numbers (like a 4K page), and the offset is the offset into that block. [edit: the other poster highlighted t

The window is an index into a consecutive block of numbers (like a 4K page), and the offset is the offset into that block. [edit: the other poster highlighted the important distinction--that the window doubles in size each time so your fixed offsets into that window become further apart. If you had 1024 offsets into a 1024 window, you get index 0 for 0. index 1 for 1. 2 for 2. etc. But when you double that window, you're now one index for two steps. #1 for 2, #2 for 4, #3 for 6. and then you add that onto the top of the previous window's starting point, which in my example was 0-1023. So add 1023 for the second block. But a diagram would be really helpful at this point.] Now, I don't see the huge benefit of introducing a whole extra topic (pointer arithmetic) to explaining floating point. But if it works for someone, more power to them! [edit: Also, since pointers don't normally swell/scale/double like floating point, then even if you explain using the pointer analogy... you then have to NOTE the difference. So I still think it's a really bad analogy to use. Even worse when tons of modern day programmers know almost nothing about system programming and addressing modes.] Anyway, best of wishes. The guy certainly put a lot of work into writing an article he thought would be helpful.