\"... construing the words of the contract involves deciding what the parties meant by what they did say. Implying terms into the contract involves deciding whether they would have said something that they did not in fact say had the matter occurred to them. And until one has decided what the parties meant by what they did say, it will be difficult to set about deciding what they would have said.\" (Lady Hale in Byron v Eastern Caribbean Amalgamated Bank [2019] UKPC 16)