(This appeared as an op-ed published Friday, Feb. 6 in the Daily Journal, a California legal newspaper.)

Section 230, “the 26 words that created the internet,” was enacted 30 years ago this week. It was no rush-job—rather, it was the result of wise legislative deliberation and foresight, and it remains the best bulwark to protect free expression online.

The internet lets people everywhere connect, share ideas and advocate for change without needing immense resources or technical expertise. Our unprecedented ability to communicate online—on blogs, social media platforms, and educational and cultural platforms like Wikipedia and the Internet Archive—is not an accident. In writing Section 230, Congress recognized that for free expression to thrive on the internet, it had to protect the services that power users’ speech. Section 230 does this by preventing most civil suits against online services that are based on what users say. The law also protects users who act like intermediaries when they, for example, forward an email, retweet another user or host a comment section on their blog.

The merits of immunity, both for internet users who rely on intermediaries—from ISPs to email providers to social media platforms, and for internet users who are intermediaries—are readily apparent when compared with the alternatives.

One alternative would be to provide no protection at all for intermediaries, leaving them liable for anything and everything anyone says using their service. This legal risk would essentially require every intermediary to review and legally assess every word, sound or image before it’s published—an impossibility at scale, and a death knell for real-time user-generated content.

Another option: giving protection to intermediaries only if they exercise a specified duty of care, such as where an intermediary would be liable if they fail to act reasonably in publishing a user’s post. But negligence and other objective standards are almost always insufficient to protect freedom of expression because they introduce significant uncertainty into the process and create real chilling effects for intermediaries. That is, intermediaries will choose not to publish anything remotely provocative—even if it’s clearly protected speech—for fear of having to defend themselves in court, even if they are likely to ultimately prevail. Many Section 230 critics bemoan the fact that it prevented courts from developing a common law duty of care for online intermediaries. But the criticism rarely acknowledges the experience of common law courts around the world, few of which adopted an objective standard, and many of which adopted immunity or something very close to it.

Congress’ purposeful choice of Section 230’s immunity is the best way to preserve the ability of millions of people in the U.S. to publish their thoughts, photos and jokes online, to blog and vlog, post, and send emails and messages.

Another alternative is a knowledge-based system in which an intermediary is liable only after being notified of the presence of harmful content and failing to remove it within a certain amount of time. This notice-and-takedown system invites tremendous abuse, as seen under the Digital Millennium Copyright Act’s approach: It’s too easy for someone to notify an intermediary that content is illegal or tortious simply to get something they dislike depublished. Rather than spending the time and money required to adequately review such claims, intermediaries would simply take the content down.

All these alternatives would lead to massive depublication in many, if not most, cases, not because the content deserves to be taken down, nor because the intermediaries want to do so, but because it’s not worth assessing the risk of liability or defending the user’s speech. No intermediary can be expected to champion someone else’s free speech at its own considerable expense.Nor is the United States the only government to eschew “upload filtering,” the requirement that someone must review content before publication. European Union rules avoid this also, recognizing how costly and burdensome it is. Free societies recognize that this kind of pre-publication review will lead risk-averse platforms to nix anything that anyone anywhere could deem controversial, leading us to the most vanilla, anodyne internet imaginable.

The advent of artificial intelligence doesn’t change this. Perhaps there’s a tool that can detect a specific word or image, but no AI can make legal determinations or be prompted to identify all defamation or harassment. Human expression is simply too contextual for AI to vet; even if a mechanism could flag things for human review, the scale is so massive that such human review would still be overwhelmingly burdensome.

Congress’ purposeful choice of Section 230’s immunity is the best way to preserve the ability of millions of people in the U.S. to publish their thoughts, photos and jokes online, to blog and vlog, post, and send emails and messages. Each of those acts requires numerous layers of online services, all of which face potential liability without immunity.

This law isn’t a shield for “big tech.” Its ultimate beneficiaries are all of us who want to post things online without having to code it ourselves, and so that we can read and watch content that others create. If Congress eliminated Section 230 immunity, for example, we would be asking email providers and messaging platforms to read and legally assess everything a user writes before agreeing to send it. 

For many critics of Section 230, the chilling effect is the point: They want a system that will discourage online services to publish protected speech that some find undesirable. They want platforms to publish less than what they would otherwise choose to publish, even when that speech is protected and nonactionable.

When Section 230 was passed in 1996, about 40 million people used the internet worldwide; by 2025, estimates ranged from five billion to north of six billion. In 1996, there were fewer than 300,000 websites; by last year, estimates ranged up to 1.3 billion. There is no workforce and no technology that can police the enormity of everything that everyone says.

Internet intermediaries—whether social media platforms, email providers or users themselves—are protected by Section 230 so that speech can flourish online.