We focus on vivid specifics and ignore the wider statistical odds.
More quotesNinety per cent effective.
Add one frightening patient story and willingness to take the treatment fell from 88 per cent to 39 per cent.
At thirty per cent effectiveness, a positive story lifted willingness to 78 per cent.
The anecdote did not merely decorate the data. It mugged the data and took its job.
Stories dominate because they simulate experience. A person, sequence and consequence can be imagined. A base rate asks the mind to represent many invisible cases at once, including all the boring ones where nothing dramatic happened. One vivid outcome therefore feels more informative than hundreds of relevant observations.
This is useful if the story reveals a mechanism the average conceals. It is dangerous when an exceptional case is allowed to impersonate probability. Sales case studies perform this trick beautifully: select the unusual success, provide rich detail and allow “possible” to acquire the emotional weight of “typical”.
Statistics have their own disguises. A percentage without a denominator or a sample chosen badly deserves no automatic respect. The point is division of labour. Stories show what an outcome can mean. Base rates estimate how often outcomes occur. Neither can quietly substitute for the other without distorting the decision.
Place them together and label the relationship. Is this case typical, unusual or deliberately chosen because it exposes an edge? That one sentence can preserve the human force without smuggling in a forecast.
People remember Pat. Almost nobody develops affection for the denominator. That is precisely why the denominator needs protection.