Because 7 8 out 9.
Hodor?
Because everyone was calling him a bone-head. (I was 6 when I came up with that).
I did not see that coming.
That's grounds for divorce!"
Hey Microsoft, why is there no Windows 9? You've given us 7 and 8, and now you're skipping straight to 10?" "Well, to be completely honest, 7 8 9."
Because 7 8 9.