Editor’s Note: Brenden Mulligan is a co-founder and designer at Cluster, and previously created Onesheet, MorningPics, ArtistData, and others. This is the final part of a three-part series on how live ...

It doesn’t matter what you call it. Here's the bottom line: you need to test software with its future users. One of the topics that create much confusion in the software world is the difference ...