Many people currently advocate against the use of business plans. They want entrepreneurs to roll up their sleeves and get their hands dirty at the very start, with the goal of monetization as quickly as possible. However, the right business plan empowers the team to build the best possible product.

Pairing testers with disabilities with nondisabled testers yields valuable results. It's a constructive approach to enhance test coverage because there are functions of an application that either a visually impaired tester or a sighted tester may miss on his own, but together they find more defects.

In your quest to figure out how your team is doing with its agile process, gathering data can be useful—as long as it does not add significant overhead to your project or get in the way of delivering customer value. Don't let the desire to quantify your improvement get in the way of improving.