Quoting munchingfoo from 01:09, 10th Dec 2007
How can you guarantee that you know something better than another? Let us even assume that you were one of the people who the ambulances were attending and let us also assume that the other person in question witnessed the entire incedent first hand. Now, would you suggest that you would know why the ambulances were there better than they?
I would suggest not, in such a case both parties would have equal knowledge of the event occuring.
The flaw in this argument is that if they were both witnessing the event firsthand they will both have as much knowledge of the event occurring, yes, but it is very possible for someone to know "better" about why the ambulances were there.
For example, following what you said, if two people saw an old man's cane break and the man himself fall over, they would both have equal knowledge of the event occurring. However, if one knew that the old man's cane had had a large chunk cut out from it recently, that person would know better about why the man fell relative to the person who only knew that the man fell because his cane broke.
