# Sturgeon's Law: Why 90% of Everything Is Crap

*Culture, Art & Literature · Sofia Bellini · 2026-09-04*

## TL;DR

Sturgeon's Law states that 90% of everything is crap, a rule coined by Theodore Sturgeon to defend science fiction from critics. It suggests that most output in any field is low quality, but the remaining 10% is worth seeking out.

## Key facts

- Theodore Sturgeon first articulated the law in the 1950s, with some accounts dating it to a 1958 column.
- Sturgeon formulated the rule as a direct rebuttal to critics who dismissed science fiction as inferior to other literary genres.
- The law applies broadly across media, art, and content, suggesting that quality is always a minority share.
- Sturgeon's Law is a stricter, more colorful interpretation of the Pareto Principle, demanding a higher level of selectivity.

## The Punchline That Defended Science Fiction

Ninety percent of everything is crap. That blunt, funny line is Sturgeon's Law, and it started as one writer's frustrated comeback to critics who kept trashing his beloved genre.

The man behind the quip was Theodore Sturgeon, a science fiction writer born in 1918 who died in 1985. He spent much of his career watching outsiders sneer at science fiction as cheap, low-quality pulp. Critics loved to judge the whole genre by its worst examples, and Sturgeon had finally had enough.

According to the original account, he fired back in a column sometime in the 1950s. The exact year gets fuzzy in retellings, with some versions dating the piece to 1958 and others pushing it earlier into the early part of the decade. What matters is the argument he made. If ninety percent of science fiction is crap, he said, then the same measuring stick applies everywhere else. Films, literature, consumer products, all of it. Ninety percent of those are crap too.

The logic hit home. Critics could no longer single out science fiction for a flaw that ran through every creative field humans touched. The saying took on a life of its own and became what we now call Sturgeon's Law.

Sturgeon himself was no slouch when it came to quality over quantity. Over his career he published more than 200 short stories, building a reputation as one of the most inventive voices in the field. In 2000, fifteen years after his death, he was inducted into the Science Fiction and Fantasy Hall of Fame, a permanent reminder that he belonged to that top ten percent he talked about.

## What Sturgeon's Law Really Means

The core lesson of Sturgeon's Law is refreshingly blunt: most of what we read, watch, or consume is low quality, so our real job is learning to spot the meaningful top 10 percent and let the rest go. Science fiction writer Theodore Sturgeon (1918 to 1985) put it this way: "Ninety percent of everything is crap." That single sentence, delivered in a 1958 column defending his genre, has become one of the most useful mental filters we have.

Sturgeon was tired of critics judging science fiction by its worst examples. If ninety percent of sci-fi was garbage, he argued, the same standard applied to films, literature, and consumer products. His point was never about defending bad writing. It was about recalibrating expectations so we stop being shocked when we encounter mediocrity and start hunting for what actually matters.

The law works in two directions at once. First, it trains you to recognize that most of the information you encounter while evaluating anything is weak, poorly constructed, irrelevant, or outright wrong. Second, it reminds you not to get stuck in that swamp. The real move is redirecting your attention toward solid ideas and thinking processes that actually function. Getting angry about the bad ninety percent wastes energy that could go toward finding the good ten.

You can think of Sturgeon's Law as the Pareto Principle's louder, stricter cousin. The 80/20 rule tells you that roughly eighty percent of effects come from twenty percent of causes. Sturgeon's Law takes that same instinct and pushes it further, demanding a much higher level of selectivity. Where Pareto observes a pattern, Sturgeon issues a challenge: assume most of what you encounter is worthless until proven otherwise, then choose accordingly.

The law also connects neatly to Occam's Razor. Both principles warn against getting tangled in unnecessary detail. When you obsess over peripheral elements or chase down every weak argument someone makes, you dilute the core idea you are actually trying to understand. Sturgeon's Law gives you permission to ignore the noise, not because you are lazy, but because most of that noise is genuinely not worth your time.

## Putting the Law to Work in Your Own Life

Sturgeon's Law works best as a filter for your attention, not a verdict on the world. The practical payoff comes when you treat that 90 percent figure as permission to stop wrestling with everything that crosses your desk. Focus your energy on the most critical elements of a problem and the most reliable information you can find, rather than getting dragged into the most common errors or the loudest complaints.

Theodore Sturgeon, the science fiction writer who lived from 1918 to 1985 and published more than 200 short stories, originally used this idea to defend his genre against critics who judged it by its worst examples. But the mental model extends far beyond books. When you are trying to solve a problem or understand a topic, the low-quality material is already unimportant. You can set it aside without guilt. Occam's Razor makes a similar point: piling on unnecessary details weakens the core idea and derails your thinking.

Of course, the law has real exceptions. Quality is subjective, and one person's "crap" can be another person's treasure. The ratio is not fixed either. Some fields or situations might run closer to 75 percent junk rather than 90 percent. And even the "good" 10 percent is not flawless. A portion of it is merely slightly above average, not genuinely excellent.

Even with those caveats, the law earns its keep. It clarifies your thinking, simplifies your choices, and counters the mind's tendency to drift toward irrelevant distractions. Next time you find yourself stuck in a conversation that bores you, a meeting that wastes your time, or a book you cannot finish, remember the principle. You are probably staring at the part that was meant to be filtered out all along.

## Brandolini's Law: The Asymmetry of Nonsense

Italian computer programmer Alberto Brandolini gave us a devastatingly simple observation in 2013, and it has only become more relevant. The amount of energy needed to refute nonsense is exponentially greater than the energy needed to create it. A single misleading tweet can take hours of careful research to debunk, and even then, the correction rarely travels as far or as fast as the original claim.

Brandolini's Law, sometimes called the Bullshit Asymmetry Principle, cuts straight to something most of us feel every single day. Producing a bad take takes seconds. Dismantling it properly takes research, patience, and a cool head. That asymmetry is why falsehoods so often seem to win the day, not because they are persuasive, but because they are cheap to produce and expensive to fight.

Here is where Sturgeon's Law becomes your shield. Theodore Sturgeon, the science fiction writer who lived from 1918 to 1985 and published more than 200 short stories in his lifetime, first voiced his famous principle in defense of his genre. Critics in the 1950s dismissed science fiction as cheap pulp, judging the whole field by its worst examples. Sturgeon pushed back with a simple observation: if ninety percent of science fiction is crap, then by the same standard, ninety percent of films, books, and consumer products are crap too. The rule stuck: ninety percent of everything is crap.

Put the two laws together and something liberating emerges. Since most of what you encounter is noise, deciding what to engage with matters more than winning any particular argument. When someone serves you a steaming pile of nonsense, you are not obligated to eat it just because you can smell it. The smarter move is to recognize the ninety percent for what it is and walk away.

That is the practical takeaway hiding inside these two principles. Stop wasting your hours on the ninety percent that will never get better no matter how hard you argue. Look for the ten percent that is genuinely worth your attention, your energy, and your thought. That is where the real value lives, and that is where your time belongs.


## Frequently asked questions

**What is Sturgeon's Law?**

Sturgeon's Law is the blunt adage that "90% of everything is crap." Science fiction writer Theodore Sturgeon coined this observation to point out that most creative output, regardless of the field, simply misses the mark. The useful takeaway is to stop wasting energy on the mediocre majority and instead hunt for the valuable 10% that actually deserves your attention.

**Who created Sturgeon's Law?**

Theodore Sturgeon, an American author who lived from 1918 to 1985, created this principle. He was a prolific and influential science fiction writer who published more than 200 short stories during his career. His sharp wit and willingness to defend his genre from critics led him to articulate this famous rule of thumb in the 1950s.

**Why did Theodore Sturgeon propose his law?**

Sturgeon proposed his law to defend science fiction from literary critics who dismissed the entire genre by pointing at its worst examples. He argued that if you judged science fiction by its weakest stories, you should apply that same harsh standard to films, books, and consumer products. By that logic, any field looks bad when you only examine its bottom tier.

**How does Sturgeon's Law relate to the Pareto Principle?**

Sturgeon's Law is a stricter, more colorful interpretation of the Pareto Principle, which is the 80/20 rule suggesting that roughly 80% of effects come from 20% of causes. Where Pareto offers a descriptive ratio, Sturgeon demands higher selectivity by claiming that 90% of everything is worthless. It pushes you to be more aggressive about filtering out the noise.

**What is Brandolini's Law (the bullshit asymmetry principle)?**

Brandolini's Law, also called the bullshit asymmetry principle, holds that producing nonsense is easy while refuting it takes far more effort. Italian computer programmer Alberto Brandolini formulated this idea in 2013. The principle explains why false claims spread so quickly: anyone can fire off a bad take in seconds, but correcting it properly can take hours.

**Did Theodore Sturgeon write science fiction stories?**

Yes, Theodore Sturgeon wrote science fiction extensively, publishing over 200 short stories throughout his career. His work earned him lasting recognition, including induction into the Science Fiction and Fantasy Hall of Fame in 2000. He remains one of the genre's most respected voices, remembered not just for his law but for his imaginative storytelling. Editorial note: Any facts which remain unconfirmed are presented as such, hedged, and should be read with appropriate caution.

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