Yes, it's called dynamic scoping, and for a long time it wasn't believed that the other option (what we call lexical scoping today) could even be implemented ef

Yes, it's called dynamic scoping, and for a long time it wasn't believed that the other option (what we call lexical scoping today) could even be implemented efficiently. https://en.wikipedia.org/wiki/Scope_(computer_science)#Dynamic_scoping https://en.wikipedia.org/wiki/Scope_(computer_science)#Dynam...