C sank V’s boat and C said that it would not, as a policy, take advantage of statute of limitations and therefore it would have to admit liability. When V prosecuted them in a tortious action, C tried to use the statute of limitations whose use it had claimed that it would forego. V argued that it could not use those statutes, promissory estoppel preventing it. The High Court said that there was no waiver
Mason CJ: All types of estoppel serve the same purpose: “protection against the detriment which would flow from a party's change of position if the assumption (or expectation) that led to it were deserted”- From Walton. The promise must relate to existing fact, NOT future fact or mere intention. Furthermore the promise must be that the promisor will consider themselves bound by their promise: here there was no such indication, even though V may have wrongly interpreted it this way. I.e. an objective test is used: what they are really asking is whether a reasonable person would consider the promisor to have bound themselves.