To be most agile with your communication, understand several models of learning styles, where you fit into them, and where your team fits into them. By tweaking the ways you communicate to fit the information and the situation, you are helping your team remain agile by valuing people and interactions over processes.

Research suggests that humans are biased, not-very-rational decision-makers. We believe we see things clearly when the evidence shows otherwise. Throw in a big dose of optimism, and it's easy to see how estimating software projects can be problematic. Our best hope is to construct diverse groups with varied viewpoints.

With API testing, if you change how the API works—even if it now works better—it will break all of the code written by people using the API. Consequently, testers have a responsibility to make sure they are testing the same contract that was established when the API was first released. Here's how to test APIs right.