Unknown Environments

Here’s Knuth in an inter­view: As to your real ques­tion, the idea of imme­di­ate com­pi­la­tion and “unit tests” appeals to me only rarely, when I’m feel­ing my way in a totally unknown envi­ron­ment and need feed­back about what works and what doesn’t… Hmm, peo­ple who are “feel­ing their way in a totally unknown envi­ron­ment”… Like …