XP seems to be made up of a lot of practices. They might be good, but what’s the bottom line for a business person? The acid test for XP isn’t what the team does, but what they deliver. Here’s what you should get from your XP team.

Pair programming might be useful between peers. But it seems like an inefficient use of a “senior” person’s time to be tied down to a “junior” person. Experience shows that pairing almost always pays off for both parties. However, not all readers are convinced: how about you?

People ask whether they have to do the XP practices to be doing XP. In some environments, some of the practices are difficult or impossible. You don’t have to do the practices to be doing XP: You have to have done them. Practice makes perfect.