> When developing in Emacs Lisp, and other Lisp environments (well, Racket, I guess), you’re editing a file meant to run at startup but can evaluate the code on

> When developing in Emacs Lisp, and other Lisp environments (well, Racket, I guess), you’re editing a file meant to run at startup but can evaluate the code on the fly. So, you have control over how the source is textually written and organized Interlisp did not work like that; editing took place on in-memory lists and the definitions would be serialized into files on request, which were sort of treated like mini databases. Image-based development was used a lot on Symbolics machines, there are advantages to it over always loading from flat text files.