Assuming that “believe” in your usage means “p(God exists)>0.5“ in my usage, and similarly “disbelieve”=”p<0.5”, this would mean that weak atheists are at exact p=0.5, which is a zero measure set. Such people don’t exist.
Seriously, it is difficult to imagine an opinion which can be reversed by literally any evidence against, no matter how weak.
Assuming that “believe” in your usage means “p(God exists)>0.5“ in my usage, and similarly “disbelieve”=”p<0.5”, this would mean that weak atheists are at exact p=0.5, which is a zero measure set. Such people don’t exist.
Seriously, it is difficult to imagine an opinion which can be reversed by literally any evidence against, no matter how weak.