Nice to see the popularity of a place like this, and kudos to the Duggans for making it happen. Further educating people about how good coffee CAN be is fantastic. I just want to let readers know that coffee is NOT science, although there are some important details to be aware of, and learn, in order to produce basic coffee easily on par with Portola at home. Won't get into those, but do know that you can do this at home (don't be intimidated by all the fancy gear at Portola). Spend $50-100 or so on basic gear, get some fresh-roasted coffee, and you're on your way to producing world-class manual-drip coffee (OK, you'll also need to read a bit about HOW to properly make coffee too). Espresso is a more challenging, and having a piece of kit like the Slayer is good, but not imperative (lots of people produce espresso on par with the Slayer at home on sub $1000 machines... which many would think is still a ridiculous amount to pay for an espresso machine).
Also, if the beginning of the article really is how it happened, I'd recommend that Truman listen to what people ask, and answer their questions (which I'm sure he typically does). The question was about adding (I assume cold) milk to a cup of "pour-over" coffee, to which he went off into a "lesson" about the affects of steaming/heating milk. While that was awfully "fascinating", and I'm sure some folks would be impressed, it didn't even come close to answering a simple, and legitimate question.