"The subject matter of s 45B comprises statements contained in documents, whether written, graphical or pictorial and whether express, implied or inferential. It seeks to remove the restrictions imposed by the ordinary rules of evidence as to documentary evidence and hearsay, on what the court may know of such statements. Sub section (3)(b) makes it clear that the statement must have evidentiary weight and there is, therefore, no reason to suppose that the section affects the rule as to relevance and the basis of admissibility. The statements which are the subject matter of the section, are statements which will be admissible if given on oath by the maker in the witness box. The method adopted in the section to achieve the desired or remedial effect, is to provide a very broad ground of admissibility and to surround that ground with safeguard. The ground of admissibility consists of the apparent genuineness of the document contained in the statement of fact, together with the apparent ability of the person by whom or at whose direction the document is prepared, to have deposed of his knowledge, at the time of the preparation of the document, to the statement contained in the document. The safeguards consist of discretions vested in the trial judge to exclude the document on the widest of grounds. The very breadth of the ground of admissibility and of the discretions to exclude, suggests that the section is not to be construed narrowly or technically. Its remedial character and the mischief which it is evidently designed to remedy, combine to indicate the need for a broad construction, giving the courts the widest discretion as to which documents containing statements should be admitted. In order to give full effect to the remedial purpose of the section, the dangers associated with unreliable material coming before courts should be met, not by giving a narrow or technical meaning to the ground of admissibility, but by reliance on the judicial discretion to exclude."