What purpose are you after with this query? It sounds dangerously much like a semantic discussion, though I may be failing to see something obvious.

"Wrong", you say, "no new information has been injected here, I have simply pointed out how to reason rationally.

I'm not sure if this line makes sense. If somebody points out the correct way to interpret some piece of evidence, then that correct way of interpreting it is information. Procedural knowledge is knowledge, just as much as declarative.

Putting it in another way: if you were writing a computer program to do something, you might hard-code into it some way of doing things, or you might build some sort of search algorithm that would let it find the appropriate way of doing things. Here, hard-coding corresponds to a friend telling you how something should be interpreted, and the program discovering itself corresponds to a person discovering it herself. If you hard-code it, you are still adding extra lines of code into the program - that is, adding information.