It's the most wonderful time of the year when kids world-over discover the wonders and joy .. of taxonomic classification and data science.. as they sort through their Treat 'r Trick hauls and work out the best way of categorizing their loot. Some, unhappy that they cannot identify a single category for Snickers bars as it contains chocolate, caramel and peanuts, may ultimately dismiss it as a fools errand and dump their entire horde into a single bowl, eschewing traditions of yore. Others will stay the course, realizing that their solution is a new category that includes other chocolate-peanut combinations, thus discovering similarity/affinity measurements in data clustering - bravo, budding data scientists!