>One heuristic I use for evaluating technical material is orthography: if you spell or capitalize or spell something improperly, it's likely you'll get a lot else wrong too.

And while the program env is lowercase, the environment is commonly referred to as ENV in technical literature, APIs and so on. If you didn't know that, it's likely you are getting a lot else wrong too...

Plus, the "heuristic" is bogus anyway. Though it might be fine for evaluating candidates for secretarial roles though...