The salient characteristics that make Maestro an IDE -- direct entry of program code, rapid feedback, etc. -- were present in Kemeny and Kurtz's time-shared Dar

The salient characteristics that make Maestro an IDE -- direct entry of program code, rapid feedback, etc. -- were present in Kemeny and Kurtz's time-shared Dartmouth BASIC over a decade previous. And Kemeny and Kurtz got the idea for interactive time-shared development from the inventor (discoverer?) of Lisp, John McCarthy. Maestro may have been influential, but it's not accurate to say that an environment developed as late as 1975 was "the first IDE".