A savant, well, that's a stronger word than I would use. But regardless, there is this, the Coffee Savants' Roundtable discussion on how to create the perfect shot of espresso. And I am attending, along with several others, whose opinions I value highly. It should be a lively occasion, and hopefully I add something to it. Regardless, you can watch the entire thing unfold at 8 PM central time. And really, you should. It'll be more interesting than whatever procedural is on network TV at the time.