How to generalize proper nouns safely

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How to generalize proper nouns safely

When writing anonymously, the first things you may want to remove are proper nouns such as personal names, company names, school names, shop names, and region names.

This is the right starting point.

However, redacting proper nouns alone does not make the text safe. Around proper nouns, clues such as job titles, relationships, timing, places, project names, case names, photos, filenames, and URLs remain.

Even if you change "Company XX" to "a company," writing "a small medical startup in western Japan that announced fundraising last month" narrows the candidates considerably.

This article organizes how to do more than remove proper nouns: how to preserve the meaning readers need while reducing the precision that leads toward your identity or people involved.

Proper nouns become strong clues

Proper nouns are information that narrows the target all at once.

Personal names, company names, school names, hospital names, store names, event names, project names, station names, and facility names are strong information even on their own. In addition, when combined with dates or job titles, they can reveal not only the person but also people involved.

Proper noun	What becomes visible	Anonymity caution
Personal name	Individual, people involved	Not only the person but also people around them may be identified
Company name / school name	Affiliation, everyday locations	The poster's position and people involved are narrowed down
Hospital / store / facility name	Place used, region	It connects to where someone goes and when
Event name	Participants, timing	It is compared with participant lists and photos
Project name	Work scope, people in charge	Insiders can tell where it came from
Station name / place name	Daily area, travel route	When it overlaps with other posts, it gets closer to home or workplace

Proper nouns involve the people around you more than you may think.

In editing to protect anonymity, treat other people's names and affiliations the same way as your own name.

First decide what you are protecting

Before generalizing proper nouns, decide what you want to protect.

The granularity of information that can remain changes depending on whether you are protecting yourself, hiding a workplace, protecting a source, or protecting a victim or person seeking advice.

Target to protect	Information needing particular care	Editing direction
The poster	Workplace, school, everyday locations, past posts	Make proper nouns that lead toward you broader
People involved	Personal names, job titles, relationships	Remove information that makes individuals stand out
Source	Affiliation, timing of contact, what was discussed	Use a granularity that increases the number of people who could know the information
Victim / person seeking advice	Region, school, family relationships	Reduce information that people nearby could infer from
Internal information in an organization	Project names, case names, meeting names, document names	Generalize expressions understood by insiders

Even with the same act of "generalizing a school name," the necessary granularity differs depending on what you are protecting.

For a low-risk general personal story, "a university in Tokyo" may be enough. For high-risk whistleblowing or consultation, you may need to reduce it to "an educational institution."

Separate meaning from precision when replacing

The purpose of generalizing proper nouns is not to empty out the writing.

Keep the meaning readers need. Reduce the precision that leads toward you or people involved.

Original expression	Replacement example	Meaning kept	Precision reduced
XX Clinic in Shibuya Ward	A medical institution in an urban area	An incident at a medical institution	Ward name, facility name
University A, Lab B	A research institution	A story from a research setting	University name, lab name
A store near Shinjuku Station	A store around a major station	A busy place	Station name, identifying the store
Manager Sato said during a regular hiring meeting	A manager said during a regular meeting	The meeting and position	Specificity of meeting name, personal name, job title
Project Falcon	An internal project	A work-related matter	Internal code name

In these replacements, the information readers need to understand the situation remains.

At the same time, information that could lead toward the target through search or internal comparison is reduced.

Generalize neighboring information too

Removing only the proper noun is meaningless if neighboring information remains.

Even if you remove the company name, candidates narrow down if location, industry, headcount, job title, announcement date, and product name remain. Even if you remove a personal name, insiders may understand if job title, age, relationship, way of speaking, and timeline remain.

Removed proper noun	Neighboring clues likely to remain	What to check
Company name	Industry, size, region, product name	Whether the combination is searchable
School name	Department, seminar, class name, event	Whether it narrows to a small group
Personal name	Job title, relationship, catchphrases, age	Whether people nearby would understand
Region name	Station, shop, dialect, weather, event	Whether everyday locations are visible
Event name	Date, venue, speakers	Whether participants are narrowed down

Before publishing, reread the whole text after removing proper nouns.

Look not at "whether the names are gone," but at "whether clues remain that could restore the names."

Over-blurring breaks meaning

Removing every proper noun can look safe.

However, if you remove even the necessary meaning, readers cannot understand the situation. In consultation text, warnings, technical explanations, and reporting materials, the problem may no longer be communicated.

What matters is checking why that proper noun is needed for what you want to communicate.

Purpose	Information that tends to be kept	Information to remove
General warning	Industry, type of problem	Company name, store name, date and time
Consultation	Situation causing trouble, support needed	School name, person in charge, job titles held by very few people
Technical explanation	Mechanism, failure pattern	Internal system name, real management screen
Preparing whistleblowing	Facts, types of evidence	Names of people involved, distribution destinations, exact time

When you separate the parts that preserve meaning from the parts that reduce precision, it becomes easier to balance readability and anonymity.

Check files, images, and URLs too

Proper nouns do not appear only in the main text.

They can also remain in filenames, image backgrounds, screenshots, PDF metadata, Office document authors, and shared URLs.

Place	Proper nouns that remain	What to check
Filename	Company name, project name, case name, date	Change to a public-facing name
Image	Signboards, name tags, school emblems, place names	Check the background too
PDF / Office document	Author, company name, template	Check metadata
URL	Organization name, user name, search terms	Remove unnecessary parameters
Audio	Names people are called, place names, facility names	Listen back to the audio content too

Metadata checking methods are covered in detail in another article.

In this article, understand that proper nouns can remain outside the main text as well.

Pre-posting check procedure

Check text where proper nouns have been generalized in the following order.

Look for personal names, company names, school names, facility names, and event names
Check nearby job titles, regions, timing, and relationships
Look for expressions that would bring up candidates if searched. If you actually use external search, do not enter unpublished text, sensitive proper nouns, or internal information as-is
Think about who an insider would picture if they read it
Check whether attached files, images, URLs, and audio contain the same information

If unclear items remain, it is important not to rush publication.

"Probably fine" is weak judgment for anonymity checks. For anything that remains unclear, proceed to one of these options: check it, generalize it further, do not publish it, or consult someone trusted.

Summary

To generalize proper nouns safely, removing only names is not enough.

Even if you remove personal names, company names, school names, facility names, and event names, the target can be narrowed down if job titles, timing, regions, relationships, filenames, images, and URLs remain.

In editing that protects anonymity, keep the meaning readers need while reducing the precision that leads toward you or people involved.

Even after generalizing proper nouns, check "who would come to mind if someone who knows the situation read this?"

Reviewing not only the main text but also images, files, URLs, and audio is an important pre-publication task.

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