I like this take on the subject: https://www.ias.edu/sites/default/files/library/UsefulnessHarpers.pdf https://www.ias.edu/sites/default/files/library/Usefulnes

I like this take on the subject: https://www.ias.edu/sites/default/files/library/UsefulnessHarpers.pdf https://www.ias.edu/sites/default/files/library/UsefulnessHa...