@TonyVladusich@mathstodon.xyz - However, there's a fascinating thing called the Good-Turing estimator. "Good–Turing frequency estimation is a statistical technique for estimating the probability of encountering an object of a hitherto unseen species, given a set of past observations of objects from different species." https://en.wikipedia.org/wiki/Good%E2%80%93Turing_frequency_estimation