A recent discussion on the Extreme Programming mailing list addressed whether there is an “80-20″ rule in software development. Let’s take a look at some numbers.

Feedback helps a developer know he needs “something”. No process will help us notice that mathematical proof is needed if we have never heard of mathematical proof. Some processes choose to list all possible techniques. XP does not.

SonicBlue (Rio) has built a device I’ve been wanting for years. It eats your CDs and plays them back digitally: 40gig worth of them! Here’s an early review of my experience with this new toy. Update: It has a bit of XP in it!