I occasionally receive emails asking me to look at the writer's new language/library/tool. Sometimes it's in an area I know well, like formal methods. Other times, I'm a complete stranger to the field. Regardless, I'm generally happy to check it out. When starting out, this is the biggest question I'm looking to answer: What does this technology make easy that's normally hard? What justifies me learning and migrating to a new thing as opposed to fighting through my problems with the tools I a...