I started my first job in 1974. My first project was to migrate apps running one of those 402 unit record machines (plus an attached adder/subtracter, plus a multiplier/divider/square-rooter) to IBM mainframes. There were a lot of those patch panels, one for each app. So my first step was to write a 402 patch panel emulator. ;) This freed up the floor space we needed to rewrite the apps properly. Quite a difference from nodejs and Angular SPAs.