This episode I attempt to find the first interactive computer text interface. All I can say is, well, it's a journey.   Selected Sources:   https://sci-hub.se/10.2307/3917015 - Early article on Stibitz's CNC Model I   https://archive.org/details/fortranprimer0000orga/page/103/mode/1up?view=theater - Primer on the FORTRAN Monitor System   https://kyber.io/rawvids/LISP_I_Programmers_Manual_LISP_I_Programmers_Manual.pdf - LISP I manual