[sei]

[the genius filter]

How To Stop Letting Algorithms Shape Your Personality

This is a comprehensive guide to intentional consumption.

We like to think that we choose what we consume.

But increasingly, what we consume is choosing us.

Every day, recommendation systems decide what you watch, what you read, what you laugh at, what makes you angry, which ideas get your attention, and which never reach you at all. These systems don't just predict behavior. They influence it.

Over time, the content you repeatedly encounter begins to shape your preferences, beliefs, interests, habits, and ultimately your identity. The danger isn't manipulation in a dramatic sense. It's a gradual adaptation so subtle that most people never notice it's happening.

Human beings are highly responsive to repeated exposure. The more often we encounter an idea, behavior, or emotional pattern, the more familiar it becomes. And familiarity breeds acceptance. Algorithms operate by maximizing engagement. They continuously reinforce specific patterns of attention and behavior. Left unchecked, recommendation systems learn who you are, and then they start determining who you become.

Marshall McLuhan saw this coming decades before social media existed. A media theorist who died in 1980, McLuhan argued that the medium through which we receive information shapes us more than any content it carries.

Consider a lightbulb: it has no message, but it restructures how we organize time, safety, and human interaction. The internet has restructured identity itself.

To take back control of who you're becoming, you have to understand the environment you're living in.

[the spark]

The Architecture of the Algorithm

McLuhan understood that every new medium creates a new environment for human consciousness.

When print arrived, it changed how people thought. Reading required sustained linear focus, which trained minds to follow arguments step by step. Television shifted that balance toward fragmented, rapid bursts of visual stimuli. In turn, each medium built a different cognitive architecture.

The Internet operates differently from any medium before it. It doesn't just present information; it also responds to you. Every click, pause, and scroll feeds algorithms that learn your patterns and predict what will hold your attention next. The result is an environment that adapts in real time to keep you engaged.

This creates something McLuhan couldn't have fully anticipated: a personalized feedback loop that tightens around each user individually. It’s powerful, and it’s dangerous.

McLuhan argued that the lightbulb restructured society not through any message it carried, but simply by enabling new forms of activity after dark. In the same way, the Internet has restructured identity not through what it says, but through how it operates. It made self-presentation instant, public, and subject to constant measurement. It made comparison automatic. It made distraction the default state. These shifts are just built into how the medium functions.

When your phone delivers content engineered to maximize your engagement, it's shaping what feels normal, what seems important, and what version of yourself gets reinforced day after day.

Understanding that process is the first step toward designing a different one.

[the science]

Repeated exposure beats any argument.

In 2014, researchers Robert Epstein and Ronald Robertson published a study in the Proceedings of the National Academy of Sciences examining how search engine rankings influence human decision-making.

They called it the Search Engine Manipulation Effect (SEME). The setup was simple: show people search results with a subtle bias in the ordering, then measure whether their preferences shifted.

They did. In some conditions, by 20% or more. The participants had no idea it was happening.

Most people assume influence requires persuasion. This research suggests it often requires only exposure. When certain information appears first, appears often, and appears easily, people become more likely to trust it, remember it, and act on it. No argument needed. No awareness required.

This is the mechanism behind McLuhan's theory. The algorithm doesn't need to tell you what to think. It only needs to control what you see first, what you see most, and what you never see at all. Your mind handles the rest.

For most of history, editors curated information. Now algorithms curate attention. Every click trains the system. Every recommendation trains the user. The loop tightens its grip, one feed refresh at a time.

The way out starts with friction. You can turn off autoplay and unnecessary notifications, and slowly start to curate your feeds with intention instead of letting them curate you. Spend time in mediums that don't adapt to your behavior, like books, long conversations, and walks without earbuds.

The goal isn't to reject technology, just to stop being passive inside it. When you choose what enters your attention, you start choosing who you become.

Influence works through repetition.

[the takeaways]

1) Become More Intentional Than the Feed​
​Before opening any platform, decide what you're looking for. When curiosity comes from you instead of the algorithm, you start training yourself instead of being trained.

2) Aggressively Diversify Your Inputs ​
​Follow people you disagree with. Read outside your field. Consume formats algorithms wouldn't naturally serve you. Break the pattern by choosing exposure the system wouldn't.

3) Spend More Time Searching​
​A conscious search reflects your intentions. When you actively seek instead of passively receive, you reclaim the choice that recommendation systems are designed to remove.

4) Audit Who You're Becoming​
​Every quarter, ask what ideas, emotions, and habits have grown stronger in your life. Trace them back to their sources. If the answer is autoplay and suggested content, you've found where your identity is being shaped without your input.

5) Bet On Sources You Control​
​Books, newsletters, long-form essays, and direct subscriptions create steadier relationships with ideas. Stable inputs help restore a measure of control over who you are becoming.