b'34As for the evidence, the Tribunal must be circumspect in its management and analysis.It must be particularly careful in analyzing the essential elements of the violation and the causal link. In other words, the reasons for the Tribunals decision must demonstrate that the Tribunal applied this duty of care and that it did so on the basis of the facts and not on mere conjecture, let alone speculation, hunches, impressions or hearsay. 11Finally, if one of the essential elements is not proven on a balance of probabilities,the alleged violation is not proven, and the notice of violation must be set aside.REMEMBERIt is not necessary to challenge each and every element in a request for reviewin order to win the case. If a single one of the essential elements is not proven,the notice of violation must be set aside .11 Ibid at para 28.'