Side note: While investigating the linearity of the relationship between capsaicin content and perceived spiciness, I came across this delightful paper by a high school student and his math teacher, which was presented as an example of how to teach logarithms. https://www.tandfonline.com/doi/full/10.1080/10511970.2021.1886206?casa_token=g-pW1fT2i7sAAAAA%3AufATO7-d9C2h27mKWDiJiMwO4fbefdHi6Q7qgN1ZawnmU6uDonUfW1yelwr3BDRuH_WEXdMh1kyEcg#d1e994