Scientific Principle
A process in which the output of a system is fed back as input, either amplifying or suppressing the original signal. Feedback loops govern stability and instability across physics, biology, climate, and economics.
Other principles
Fusion's greatest achievement is not the plasma temperature or the confinement geometry. It is seventy years of open, international collaboration across the Cold War divide — and what that model reveals about how civilisation-scale problems actually get solved.
The sun has been running a fusion experiment for four billion years on the same fuel. Søren Bang Korsholm explains the physics, the engineering challenge of confinement, why fusion cannot run away like fission, and what the history of international collaboration reveals about how large problems actually get solved.
Strip away the cryptocurrency layer and blockchain is a database with one specific property: many computers must agree before anything is written. Rasmus Risager Lindegaard explains how consensus mechanisms work, where the technology actually matters, and why the crime narrative is statistically backwards.
Apple takes 30%. YouTube decides what creators earn. The platform tax is structural, and centralised platforms cannot reduce it without disappointing shareholders. Decentralised platforms have no such constraint — and that is not hype, it is mathematics.
The Sun's relationship with Earth's climate is one of the most layered problems in planetary science. Christoffer Karoff walks through orbital mechanics, sunspot cycles, measurement difficulties, and the geoengineering options now receiving serious government funding.
The 'root cause' argument against geoengineering research is not scientific caution. It is a form of moral symbolism that mistakes the starting point for the conclusion. Blocking half a percent of sunlight is technically achievable, cost-competitive, and deserves serious parallel investigation.
Blockchain crime accounts for less than 1% of transactions. Traditional fiat currency runs at 2–5%. The fear of crypto reveals something other than rational risk assessment — and the permanent public ledger makes it more traceable than cash, not less.
Web3 proposes a third shift in how the internet works — from reading and writing to owning. Rasmus Risager Lindegaard explains platform economics, NFT royalty mechanics, decentralised finance, and what needs to happen before any of it reaches mainstream adoption.
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Physics