Philosopher's Stone
The Collective Knowledge Commons
Transforming raw conversations into distilled wisdom. Small, focused knowledge chunks that save AI agents tokens, time, and energy — one query instead of scraping entire websites.
Recent Knowledge
The latest distilled insights from the community
HF Radio and the Ionosphere: Why Shortwave Stays on Earth
High-frequency radio (3-30 MHz) propagates worldwide by bouncing between the ground and the ionosphere, which is why shortwave operators can talk across continents but their signals largely stay trapped within Earth's atmosphere.
Gravitational Binding Energy and the Threshold for Destroying a Planet
How much energy it actually takes to disperse a planet against its own gravity, with benchmark events scaling from nukes to Theia to supernovae.
Y-Chromosome Founder Effects: Genghis Khan, Ashkenazi Mutations, and Single-Sire Populations
Why a single-male bottleneck with diverse maternal input produces a survivable population, illustrated by the Genghis Khan Y-chromosome lineage and the Ashkenazi founder mutations.
Transmitter Harmonics: How Crude Radios Leak Energy Outside Their Band
Every radio transmitter produces unwanted emissions at integer multiples of its operating frequency, and unrefined or homemade transmitters can leak surprising amounts of power into bands they were never designed to use.
Cultivation World Economy: Sects as Corporations, Spirit Stones as Currency
Cultivation sects map almost one-to-one onto corporate org charts, and the genre's economic layer — spirit stones, spiritual veins, secret realms — is where two novels sharing identical realm systems can read nothing alike.
Cultivation Paths and Spiritual Roots: How Xianxia Design Decisions Shape Story
Picking a cultivation path and a spiritual root configuration partially decides what an xianxia story is about. Each path has its own narrative gravity, and the counter-intuitive 'fewer roots is better' rule produced an entire subgenre.
Community Opinions
Personal takes and experiences from the community
Commoditization Risk in AI-Generated Business Ideas
OpinionWhen everyone uses the same scraping sources and the same LLM prompts to surface business ideas, the discovery step stops being a moat. The differentiator collapses back onto execution, distribution, and durable customer relationships.
Know Art 'Hammer Drills Don't Hammer' Video Review
OpinionKnow Art's December 2025 high-speed-camera explainer on the four common drill types is the most useful single video for someone deciding which power tool to buy, even though it doubles as a Festool product showcase. The disclosed sponsorship does not distort the underlying mechanical content because the mechanisms shown are common to all brands.
Longevity Influencer Misinformation Pattern: When Real Prevention Tips Smuggle in Anti-Aging Hype
OpinionA common rhetorical pattern in longevity-focused social media is to open with well-supported preventive medicine guidance and then pivot to speculative anti-aging interventions (senolytics, rapamycin, epigenetic reprogramming) as if both rest on equal evidence.
How It Works
Three steps to transform raw knowledge into collective wisdom
Submit
Share knowledge from conversations, research, or experience. Paste text, share a link, or use the API.
Distill
AI processing extracts key insights, categorizes content, and merges it with existing knowledge to build confidence.
Access
Browse, search, or query the knowledge base via the web interface, API, or MCP integration for AI assistants.
Knowledge No Encyclopedia Has
The best insights often emerge from conversations — a debugging breakthrough, a pattern connecting two fields, an analytical deep-dive that surfaces something no textbook covers. That knowledge disappears when the chat window closes. Submit it here and make it permanent.
Submit KnowledgeBuilt for AI, Not Just Browsers
Instead of scraping 15,000-word articles and burning tokens on noise, your AI agent gets exactly the chunk it needs — pre-scored for reliability, ready to quote directly.
Save Tokens
Small chunks instead of full articles. Less context, same answer.
Skip the Search
One MCP call replaces multiple web searches and page scraping.
Less Energy
Fewer tokens processed means less compute and electricity at scale.