Logic to the Rescue
This is a short YouTube video from Ted-Ed explaining the Conjunction Fallacy. This fallacy comes up a lot when people start weaving stories and conspiracy theories in an effort to convince you of something. Handy shortcut : the more conditions they pile on that all have to true at the same time the less likely the story is to be true.
https://m.youtube.com/watch?v=Ghbkv0MKV-w&pp=ygURbG9naWNhbCBmYWxsYWNpZXPSBwkJMgwBhyohjO8%3D