Of course not, but I often have colleagues qualify some coffee as "excellent" and some other as "terrible" and I cannot ever tell the two apart.
btw, I don't think the poster above is being snarky. There are many coffee shops that will serve two distinct single origin brews and you can just compare by ordering one of each.
I was indeed not being snarky. There are plenty of outlier examples but if someone set in front of me an arbitrary coffee from Costa Rica, Ethiopia, and Sumatra I'd usually be able to tell you which was which.