‘That the rule rests, at least in part, on public policy is clear from many authorities, and the convenient starting point of the inquiry is the nature of the underlying policy. It is that parties should be encouraged so far as possible to settle their disputes without resort to litigation and should not be discouraged by the knowledge that anything that is said in the course of such negotiations (and that includes, of course, as much the failure to reply to an offer as an actual reply) may be used to their prejudice in the course of the proceedings. They should, as it was expressed by Clauson J in Scott Paper Co v Drayton Paper Works Ltd(1927) 44 RPC 151 at 156, be encouraged freely and frankly to put their cards on the table … The public policy justification, in truth, essentially rest on the desirability of preventing statements or offers made in the course of negotiations for settlement being brought before the court of trial as admissions on the question of liability. The rule applies to exclude all negotiations genuinely aimed at settlement whether oral or in writing from being given in evidence.’
‘to speak freely about all issues in the litigation both factual and legal when seeking compromise and, for the purpose of establishing a basis of compromise, admitting certain facts.’