I believe the first consumer optical mouse would beg to differ.
http://hardware.slashdot.org/story/99/04/20/0214216/MS-Introduces-Optical-Mouse
An old Thermos that is of the glass-lined vacuum filled sort is dangerous, due to the potential of breakage.
Ah, brief. Much C was written in that jewel. It is the reason many of my text editors have been configured with blue as a background and white foreground.
If you REALLY have the D2 key in hand, you can go to Blizzard.com, create a free account, then "register" your keys that gives you access to the game download from Blizzard that you can then install and play.
Don't forget to patch to 1.12a.
Genetics explains why you look like your father, and if you don't, why you should.