“I don’t know how you could know that”
“Because there is no reason to assume otherwise.”
“You claimed you didn’t think of it so they probably didn’t either. Now you say that didn’t think of it. I think it’s fair to assume there are many in the world their own thoughts independent of whether or not you share them.”
As I already pointed out, according to halacha,if there is more than one possibility, we have a chiyuv to assume the best, and we are not allowed to think that the other (negative) possibility can possibly be true.