14 We have had the advantage, in these proceedings, of a detailed report prepared by Mr Taylor, arborist of Australian Tree Consultants Pty Limited, who raises a number of matters. One of these we need to deal with and set aside immediately. In his discussion of the arboricultural issues, on p 9 of his report, Mr Taylor speculates that there was some anecdotal evidence that the area of the Spillanes' house may previously be have been used as a dam with that dam being filled prior to a subdivision of the area taking place. There is no evidence (of any persuasive nature) on this point. In these proceedings, on such an assertion, the burden of proof would fall on the person asserting that proposition - as a consequence, we set aside that proposition from any consideration