Background
Much of what makes illness stressful is not knowing: how long a wait will be, what was said in a consultation, what a new medicine is for, or what to do if symptoms worsen. Someone in the health system usually holds these answers, yet patients routinely go without them.
Objective
This paper distinguishes irreducible, clinical uncertainty from reducible, informational uncertainty. It introduces “uncertainty debt”, the stock of questions a patient carries that the system could answer but has not, as a way to make the second kind visible and costable.
Methods
Drawing on peer-reviewed research from neuroscience, aviation, meteorology and service operations, alongside NHS and US performance data and healthcare intervention studies, we examine how uncertainty affects people, how other industries have managed it, and where the debt is created and paid in healthcare.