Bounded Rationality
People make decisions from incomplete information, limited attention, and simplified models of reality, so even highly rational decisions are rational only within the boundaries of what the decision-maker could actually know and process.
What Is It?
Herbert Simon introduced bounded rationality across two 1955 and 1956 papers, later collected in his 1957 book Models of Man, as a direct challenge to the assumption, standard in economics at the time, that people gather all relevant information and select the objectively best option. Simon argued that real decision-makers face limits: limited time, limited information, and limited capacity to process either. Given those limits, people don’t maximize. They satisfice, they search until they find an option that clears an acceptable threshold, then stop.
The important point is that bounded rationality isn’t irrationality. People can reason perfectly sensibly from the information and options available to them while still reaching a poor decision, because the boundaries around that reasoning excluded something important. A manager choosing a vendor, a hiring panel choosing a candidate, an executive choosing a strategy: none of them are comparing every possible option against every other. Judged only by what was inside their view, the decision can look entirely sound. Judged against what actually mattered, it can still be wrong.
Why Does It Matter?
Organizations don’t eliminate bounded rationality. They distribute it. No executive sees the whole organization. No team sees the whole problem. Reporting systems determine what information becomes visible. Org structure determines whose knowledge enters the decision. Metrics compress reality into a number, and that number gets compressed again by the time it reaches someone senior.
An organization can have all the information required to make a good decision somewhere inside it and still make a bad one, because no individual decision-maker has access to all of that information at once. The constraint isn’t necessarily intelligence or effort. It’s that every decision gets made from a partial model of the system, and the shape of that partial model, what hierarchy, metrics, and specialization let through, is often a bigger factor in the outcome than how carefully anyone reasoned once the information reached them.
What Changes Once You See It?
You stop asking only whether the decision-maker reasoned well, and start asking what information, options, and perspectives were actually inside the boundary of the decision in the first place. A well-reasoned decision made from a narrow view of the situation is still a narrow decision.
You also get more deliberate about satisficing itself: when exhaustive search genuinely isn’t worth the cost, define what good enough looks like before searching, rather than letting exhaustion define it afterward.
Common Misunderstandings
- It is not a claim that people are bad at decisions. It’s a claim that the standard against which decisions get judged, full information and true optimization, was never realistic to begin with.
- It isn’t another name for bad judgment. A boundedly rational decision can be internally sensible and still produce a bad outcome because something important sat outside the decision-maker’s information, attention, or available options.
- It does not mean more information is always useless. It means the value of additional information has to be weighed against the cost of gathering it, and that cost is often ignored.
- It is not the same as decision paralysis or overthinking. Satisficing is what happens when the search stops appropriately. Paralysis is what happens when it doesn’t stop at all.
Diagnostic Question
What would we need to know to make a different decision, and is that information actually reaching the people deciding?
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Origin
Herbert Simon introduced bounded rationality in “A Behavioral Model of Rational Choice” (1955) and “Rational Choice and the Structure of the Environment” (1956), both collected in his 1957 book Models of Man. Simon received the Nobel Memorial Prize in Economic Sciences in 1978, in substantial part for this work.