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"What's the evidence for that document?" "Keep the evidence." Few people who hear these phrases in meetings and negotiations use them with anything more than a vague sense of their meaning. Evidence is an important keyword that supports the persuasiveness and reliability of business, but because its meaning shifts slightly by situation, it is a word worth pinning down accurately.
This article organizes the meaning and origin of evidence, then explains—with examples—its two uses in business, differences in meaning by industry, Japanese paraphrases, and differences from similar terms.
Evidence is a loanword transcribing the English word directly into katakana, carrying meanings such as proof, grounds, backing, and traces. Its origin traces back to the Latin "evidentia" (being clear or obvious).
In a word, evidence is objective information that supports the correctness of a claim or judgment. Rather than mere assumptions or speculation, it refers to backing based on reliable information such as data, records, and case examples. It was originally used in medical and academic fields, but is now used across a wide range of fields including business, IT, and finance.
In business settings, evidence is used in roughly the following two senses. Which meaning applies is judged from context.
This is the case of using it in meetings, presentations, and proposals to show that your claim is correct. Statistical data, market research, survey results, and past achievements apply. Presenting objective numbers and facts makes proposals that would not pass on subjective opinion alone more likely to pass.
This is the case of referring to records kept in negotiations and business communications to prevent later "he-said, she-said" trouble. Minutes, emails, chat exchanges, screenshots, and contracts apply. Because verbal promises are hard to prove, keeping things in tangible form is expressed as "leaving evidence" or "taking evidence."
What evidence refers to changes depending on the industry in which it is used. It is important to grasp how it is used in your own industry.
In the system development field, it often refers to records showing that a developed system operates according to specifications. Screenshots of operating screens, test results, and output data are treated as evidence.
In the medical field, evidence refers to the scientific grounds showing the efficacy of a treatment or drug. What has been confirmed effective through clinical trials and research is treated as evidence, and medicine based on this is called "EBM (evidence-based medicine)."
In the finance and real estate fields, it can refer to documents that serve as proof. Withholding tax slips proving income, ID documents for identity verification, and materials showing financial assets such as savings and stocks correspond to the evidence required during screening.
Evidence is a convenient word, but depending on the audience and situation, plain Japanese may convey it more naturally. It can be paraphrased according to context as follows.
Rephrasing "please provide the evidence" as "please show the grounds," and "leave evidence" as "keep a record," conveys smoothly even to those unfamiliar with the jargon.
Terms used with meanings similar to evidence include fact, source, and proof. Let's sort out the differences.
In situations where plain words like proof or grounds convey the meaning fully, deliberately overusing the loanword can give the other person a stiff or high-handed impression. Being conscious of the following leads to smooth communication.
Evidence, derived from the English word, is a business term meaning proof, grounds, and backing. In business it is used in two senses—grounds or backing that support a claim, and proof or traces kept as a record—and what it refers to also changes by industry, such as IT, medical, and finance.
What matters is to grasp the meaning correctly according to context and to use it selectively in necessary situations. The consideration of not forcing a loanword when plain words like grounds, proof, or record convey the meaning is also a condition of a trusted businessperson. Understanding loanwords correctly also connects to your business fundamentals in job-change and job-hunting situations.
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