Where a rent review clause in a commercial lease produces an absurd result when read literally, and the nature of the drafting error and the intended meaning are sufficiently clear, the court may construe the clause 'as if' it contained different language reflecting the parties' objectively ascertained intentions, without requiring rectification. The threshold is higher than mere unreasonableness — the literal reading must produce a result that flouts commonsense. The application of the absurdity rule involves questions of degree.
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