Relevance is a matter to be decided by a judge as question of law.
Although prima facie admissible if so related to a fact in issue that it tends to establish it, that does not end the inquiry. This merely determines the logical relevance of the evidence. Other considerations enter into the decision as to admissibility. Cost in this context is not used in its traditional economic sense but rather in terms of its impact on the trial process. Upon hearing the interlocutory motion the chambers judge considered the facts and the applicable law.