“Reasonable” means whatever the policy’s definitions, examples, conditions, and exceptions make it mean in that specific situation. Before acting, trace the word to those nearby passages and confirm that your interpretation fits the document as a whole.
In 1999, NASA’s Mars Climate Orbiter was approaching Mars when the navigation team lost contact with it. The spacecraft had passed much closer to the planet than planned and was presumed destroyed.
The failure investigation found a mismatch hiding behind familiar numbers. One team had produced thruster data in pound-force seconds, while another part of the system expected newton seconds. The values looked usable. Their meaning depended on a convention that the two teams did not share.
NASA’s Mars Climate Orbiter Mishap Investigation Board Phase I Report documents the mismatch and the failed checks that allowed it to continue. The lesson extends beyond engineering: a familiar term can still carry the wrong meaning when people supply its context from memory instead of checking the source.
Why “reasonable” cannot be interpreted alone
Suppose a workplace travel policy says employees may claim “reasonable meal expenses.” A generic web search might return tax guidance, court decisions, travel blogs, or another company’s reimbursement limits. Each result could offer a plausible definition. None can tell you what this employer approved.
The policy itself may contain the clues that control the answer. “Reasonable” might refer to local prices, an internal spending limit, itemized receipts, approved travel dates, or an exception for client dinners. A definition section may narrow it. An example may show what finance previously contemplated. A later paragraph may require advance approval above a threshold.
One adjective can therefore affect whether an employee books dinner, pays personally, asks a manager first, or submits an expense that will be rejected.
The Mars Climate Orbiter teams did not lack a definition for force. They lacked a shared interpretation at the point where the information changed hands. A workplace policy creates the same class of risk on a smaller scale: the reader and the document can appear to agree while assigning different boundaries to the same word.
Read outward from the ambiguous word
Start with the sentence containing “reasonable,” then widen the frame.
Read the paragraph before and after it. Check the policy’s definitions, examples, tables, approval rules, and exceptions. Search for every other appearance of the term. A later section may reveal that the policy uses “reasonable” differently for meals, accommodation, notice, or personal use.
Then test the word against the actual decision:
- Who decides whether the expense or action is reasonable?
- Does the policy give a limit, factor, or example?
- Is prior approval required?
- Does another section create an exception?
- What evidence must the employee keep?
This method avoids false confidence. It may still produce an unresolved answer, but “the policy does not define this clearly” is useful. It tells you to ask the policy owner before committing money, missing a deadline, or relying on an exception.
That distinction matters in other dense documents too. A recommendation can look universal until one qualification changes who it applies to, as in this example of a hidden exception in a PDF. The safest reading preserves the conditions surrounding the claim.
Keep the answer tied to the document
A generic AI answer can explain how “reasonable” is commonly used. A grounded answer should do something narrower: identify the passages that shape the term inside the uploaded policy.
With Adesa, you can upload the PDF or EPUB, listen through the full document, and ask a question without leaving playback. Try: “What factors does this policy use to decide whether an expense is reasonable?” Then follow with: “Are there limits, examples, approval requirements, or exceptions elsewhere in the document?”
The useful response should point back to the source rather than produce a universal definition. If the document never resolves the ambiguity, the answer should say so. That is more trustworthy than filling the gap with a confident guess.
This workflow also helps when the decisive condition appears far from the first mention. A clause on page five may depend on an approval rule near the end. Listening supplies the sequence; grounded questions help reconnect the distant passages. The same approach applies when one missed condition could change a contractor-access decision.
Turn uncertainty into a precise question
Before acting on “reasonable,” write down the interpretation you are about to use. Then ask the document to support or contradict it.
For example: “I read ‘reasonable notice’ as notice given before the schedule is finalized. Does the policy define a different timing requirement or name any exceptions?” That question is stronger than “What does reasonable mean?” because it exposes your assumption and gives the source something specific to test.
If the policy supports the interpretation, keep the relevant passage with your notes. If two sections conflict, send both to the person responsible for the policy. If no section supplies a boundary, request a decision in writing.
The Mars Climate Orbiter investigation did not treat the unit mismatch as a vocabulary problem. It examined the handoff, the assumptions, and the missing verification. Do the same with an ambiguous policy word: locate the governing context, test the interpretation, and stop before an unstated assumption becomes an expensive decision.
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