The below contains information revealed in Episode 5, "Choose Your Pain", so if you haven't watched that far yet, you might want to stop reading for now. My wife and I were out at breakfast, and for some reason, almost at random, she started in on a rap song that has the line "Is that your ass or is your mama half-reindeer?" Which is a really, really stupid line , but I suddenly realized that what Stamets said about humans sharing DNA with mushrooms might not be true of any of the rest of the species in the crew, but it WOULD be true for other Earth species. Including reindeer. AND, there is a legend that very probably has its origins in Icelandic reindeer eating hallucinogenic mushrooms and "getting high". Conclusion: San-ta Claus is com-ing, to town. Could this be the first Star Trek TV series to have an actual Christmas special? There's this thing that's been on the 'net for a long time - probably pre-dates the 'net - about the physics problems involved in St. Nick making all of the deliveries he's supposed to make in a single night. Problems that could probably be overcome if he had a spore drive!