There are some instances where dynamic scope actually is not as insane as it may seem. Although the paper is probably dated and opinions have changed since the

There are some instances where dynamic scope actually is not as insane as it may seem. Although the paper is probably dated and opinions have changed since then I can still understand that there are practical reasons to dynamic scope in some instances: https://www.gnu.org/software/emacs/emacs-paper.html#SEC18 https://www.gnu.org/software/emacs/emacs-paper.html#SEC18 All my own Elisp code uses lexical scoping by default and I don't trust myself enough to use dynamic parameters liberally in my code. But I don't think it's entirely unreasonable to have the ability to dynamically override internals.