Bootstraps are a version of the lean startup with a 37-signals-esque twist, i.e a lean bootstrap. The goal of a lean bootstrap is to run in the black as early as possible, preferably from day 1. Boostrappers don’t need or want outside capital for the most part, and they are always conscious of the need to validate that they can actually make money doing whatever they are doing. Basically, if you (metaphorically) placed Rework and The Lean Startup in a blender, turned it to high, then ran the pur …