Years ago I worked in-house at a startup magazine called, if I’m remembering correctly, Real. The publication itself didn’t last very long, but my time there was worth it for one takeaway: a piece of advanced comma usage advice the showrunner at Real imparted to me that I’d never heard expressed before, and haven’t heard anyone express since. It occurs to me now that I can use this space to pass that wisdom along. This rule of thumb isn’t applicable in every single case, and there will always be exceptions and judgment calls, but it’s served me well. It has to do with whether you use a comma before too (or either or as well or similar). If the word you’re referencing does not…