Also, if everyone changes the environment binary search would give lots of false detections in case you don’t know what exactly to expect (like when you mentioned toppling a trash can)

But by 'change the environment' I mean the event itself does the change, and not other humans doing non-event things. Though people can congregate around a location of where an event happens and loiter there, and that would be a marker as well for a binary search.

And honestly, the thing everybody is arguing with me against, is that they are advocating that there would be a prestine before and after static image around an event, making binary searches not possible. Truly? That would be excessively rare in my eyes, reality usually doesn't work like that.