2018.12.19 02:09:16 (1075196334079004672) from Daniel J. Bernstein, replying to "Brian Fitzpatrick (@therealfitz)" (1075107615590506497):
A study at normal reading distance (https://onlinelibrary.wiley.com/doi/abs/10.1002/asi.4630350606) found that all-caps is just as easy to read. Have you found contrary studies? People often claim that all-caps is slower because of word shapes; however, the word-shape model is discredited. See https://docs.microsoft.com/en-us/typography/develop/word-recognition.