The folly of forecasting

Every prediction should come with a returns policy.

If the future fails to match the confident claim, what happens? Usually nothing. The date moves, the language softens and the prophet is invited back to explain why events were fundamentally correct in spirit. Certainty enjoys the sale; accuracy handles customer service.

Forecasts remain unavoidable. Staffing, cash and investment all depend on views about events that have not happened. The offence is presenting one crisp number as knowledge when it is really a bundle of assumptions compressed into a decimal point.

A single sales number hides several different worlds. Ten deals may close early, late or never. Each path produces a different hiring decision and cash problem, despite sharing the same reassuring total on forecast day. Precision can conceal the exact uncertainty planning needs to expose.

A useful forecast says 60%, not “definitely”. It gives a range, a timeframe, a base rate and the conditions that would change the view. Most importantly, it remains available after the outcome, before memory’s alterations department opens.

The quieter expert often looks weaker because calibrated language allows surprise. Good. The world has not signed the forecast.

Knowledge should improve the odds and prepare the response. Anyone claiming it abolishes uncertainty is selling certainty because certainty sells.

Behavioural principles

Behavioural ideas at play in this post

Short, plain-English explanations of the principles behind this post, with links to related books and examples in the archive.