Active

r/hpmor

The unofficial subreddit for "Harry Potter and the Methods of Rationality" by Eliezer Yudkowsky (aka "Less Wrong").

Subscribers

17,211

Created

November 30, 2011

14 years ago

View on Reddit
RedPulse insight

How to think about r/hpmor

This community centers around the fanfiction 'Harry Potter and the Methods of Rationality,' which reimagines the Harry Potter universe through a lens of rational thinking and scientific inquiry. It attracts fans who appreciate deep philosophical discussions, logic, and the application of rationalist principles to magical scenarios. The distinct blend of humor, intellect, and creativity sets it apart from typical fanfiction discussions.

Confidence 4/5

  • Audience

    Members are typically fans of rationalist literature and philosophy, often skewing towards a younger, intellectually curious demographic. They engage with themes of science, ethics, and logic, and often seek to apply these concepts to both fictional narratives and real-life situations. The vibe is generally supportive and inquisitive, with a strong emphasis on critical thinking.

  • Posting culture

    Content that thrives includes thoughtful analyses, fan theories, and discussions about the implications of rationality in the story. Posts that are overly promotional or lack depth may receive downvotes, as members value quality and intellectual engagement. The community encourages regular participation, with a mix of original content and responses to ongoing discussions.

  • Brand engagement notes

    Brands should approach this community with caution, as overt promotion is often met with skepticism. Authentic engagement through discussions that align with the community's interests—such as rationality, science, and ethics—can be effective. Brands might consider sharing insights or content that resonates with the themes of the fanfiction, rather than direct advertising. Transparency and a genuine interest in the community's topics are crucial for positive reception.

Similar communities

Where this audience also spends time

Topic-adjacent communities surfaced from Reddit's own related subreddit signal.

FAQ

r/hpmor — frequently asked questions

Quick facts about this subreddit's size, history, focus, and related communities.

How many subscribers does r/hpmor have?

r/hpmor has approximately 17,211 subscribers as of May 27, 2026.

When was r/hpmor created?

r/hpmor was created on November 30, 2011 (14 years ago).

What is r/hpmor about?

This community centers around the fanfiction 'Harry Potter and the Methods of Rationality,' which reimagines the Harry Potter universe through a lens of rational thinking and scientific inquiry. It attracts fans who appreciate deep philosophical discussions, logic, and the application of rationalist principles to magical scenarios. The distinct blend of humor, intellect, and…

What subreddits are similar to r/hpmor?

Communities similar to r/hpmor include r/rational, r/parahumans, r/lesswrong, r/wormmemes, r/slatestarcodex.

Ready to engage on r/hpmor?

Authentic engagement, not spam.

RedPulse runs Reddit campaigns the way the platform actually rewards — high-karma accounts, native conversations, and content moderators welcome.