Can we draw the following hypothesis from the context?

Context:

All right. It's admitted subject to the defendants' objection. P60 is the letter from School Board Member Geesey to the editor again. I think I noted that it was admitted. Over the objection already of the defendants, we'll reaffirm that, but you can make any other objections you want to on the record, but I think that was thoroughly argued at that time.

Hypothesis: The letter is a key piece of evidence.
It's impossible to say