The little sticker on the first page of the memo indicates that we're able to read this because it's part of the Comes V Microsoft antitrust litigation. See http://iowa.gotthefacts.org/

Perhaps a good time to remember not to put things in writing at work (this includes Slack) that you wouldn't want seen in exhibits for the prosecution.

I browsed around randomly (the exhibits are untitled) and found http://iowa.gotthefacts.org/011607/0000/PX00697.pdf : "we have sorted criticisms of Microsoft into three categories: lying, cheating, and arrogance" (to Ballmer)

http://iowa.gotthefacts.org/011607/0000/PX00764.pdf : angry letter from Borland

http://iowa.gotthefacts.org/011607/0000/PX00859.pdf : competitive analysis memo versus PenOS, perhaps the first company to produce what would be recognisable as an iPad ancestor. In 1991.