science

Not safe for work

Not safe for work is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Not safe for work rather than just read about it. In short: Not safe for work (NSFW), also known as not suitable for work, is Internet slang or shorthand used to mark links to content, videos, or webpages the viewer may not wish to be seen viewing in a public, formal, or controlled environment. The marked content may contain graphic violence, pornography, profanity, nudity, slurs, or other potentially disturbing subject matter.

Key takeaways

Not safe for work belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Not safe for work to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Not safe for work from memory before moving on to harder problems.

Reference excerpt

Not safe for work (NSFW), also known as not suitable for work, is Internet slang or shorthand used to mark links to content, videos, or webpages the viewer may not wish to be seen viewing in a public, formal, or controlled environment. The marked content may contain graphic violence, pornography, profanity, nudity, slurs, or other potentially disturbing subject matter. Environments that may be problematic include workplaces, schools, and family settings. NSFW has particular relevance for people trying to make personal use of the Internet at workplaces or schools that have policies prohibiting access to sexual and graphic subject matter. Conversely, safe for work (SFW) is used for links that do not contain such material, especially where the title might otherwise lead people to think that the content is NSFW. The similar expression not safe for life (NSFL) is also used, referring to content which is so nauseating or disturbing that it might be emotionally scarring to view. Links marked NSFL may contain murder, gore, or certain fetish pornography. Some platforms, such as Reddit, Twitter, Patreon, or DeviantArt have long offered users the option to designate their content as NSFW, in order to warn others of its explicit nature before they access it, as well as to algorithmically separate it from SFW content.

History It has been speculated that the term evolved from an earlier form originating on message boards, not for British school kids (NFBSK), which appears online as early as the year 2000. "NSFW" itself has been used in online communities since the early 2000s, with a definition being posted to Urban Dictionary in 2003. In 2009, it was suggested that a future version of HTML could include "NSFW" as a standardized tag for adult material on websites that could be automatically hidden depending on user settings. By 2011, the term was common enough to be added to Oxford Dictionaries Online, with Merriam-Webster adding the abbreviation to its dictionary in 2015. The Oxford English Dictionary added the term in 2016, citing earliest evidence of usage from 2002.

Worked examples

Example 1 — a first encounter with Not safe for work

Start with the simplest possible case. Write down what Not safe for work claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Not safe for work before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Not safe for work ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Not safe for work

In research: Not safe for work appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Not safe for work in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Not safe for work is common in secondary-school and first-year university syllabi. It links to neighbouring topics Internet censorship, Internet slang, Internet terminology, so understanding it makes those chapters shorter.
In everyday life: Look for Not safe for work outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Not safe for work in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Not safe for work means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Not safe for work out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Not safe for work in simple terms?

Why does Not safe for work matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Not safe for work?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Not safe for work.