It means neither. It's a commonly used term when roleplaying post-apocalyptic scenarios to denote "before the apocalypse". So OPs scenario is survivors of an apocalypse lead to believe a Geiger Counter is a gold detector.
Edit: to clarify, the "fall" it's referring to is the fall of civilization
My first impression from the adhesion issue (which doesn't appear to be the main issue of this post) is that you may need to clean your build plate. But considering it was relatively good as it is, I assume you did and the few spots may just be accidental touches to the surface. In either case, their guide is here: https://wiki.bambulab.com/en/filament-acc/acc/pei-plate-clean-guide
As for the extrusion issue - considering the apparent randomness of it my guess would be either an issue with the filament or a partial clog.