Dimensional thinking trilemma

Chapter 1 - Worldview

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Welcome to the Dimensional thinking trilemma page

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Coming soon

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Core ideas

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In this part, I give you real-world examples of how trilemmas dominate our world.

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Trilemma (Wikipedia)
https://en.wikipedia.org/wiki/Trilemma

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Financial

The financial trilemma states that financial stability, financial integration and national financial policies are incompatible. Any two of the three objectives can be combined but not all three; one has to give.

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Economic trilemma (Investopia)
https://www.investopedia.com/terms/t/trilemma.asp

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Blockchain

The blockchain trilemma explains the challenge of balancing security, decentralisation, and scalability in blockchain networks. The fundamental design of many decentralised networks means that increasing scalability tends to weaken decentralisation or security. This is what's known as the blockchain trilemma.

Public blockchains are generally designed to be decentralised, meaning no single participant should have unilateral control over the network. In practice, the degree of decentralisation varies widely between networks. The network is typically open to anyone who wants to participate, and control is distributed across all participants. Everyone has access to the same ledger, and if a participant tries to cheat the system by changing the records in their favour, the rest of the network can verify and reject the fraudulent data. Decentralisation comes with trade-offs. As multiple users must reach consensus on each transaction, processing is often slower than in centralised systems. This makes scalability (the ability to handle more transactions per second) a key challenge for decentralised networks.

Security is essential for any blockchain because, without it, attackers could compromise the network and alter transaction history. Whether a system is centralised or decentralised, security is not guaranteed. Centralised systems can benefit from tighter control and faster decision-making, but they also present a single point of failure and depend heavily on the quality of their security teams.

For blockchain technology to support mainstream adoption and potentially billions of users, it must process transactions quickly, cheaply, and reliably. In practice, scalability often takes a back seat to decentralisation and security, which are the two foundational principles of blockchain design.

The most straightforward approach to the blockchain trilemma would be to reduce the number of network validators (nodes) in exchange for greater scale and speed. But doing so would weaken decentralisation, handing control to a smaller number of participants, and could also weaken security as fewer players mean a higher chance of attacks. So here lies the trilemma: security and decentralisation are deeply interconnected, and the way blockchains are built makes it hard to improve scalability without weakening either. The big question is how to make blockchains faster without sacrificing the very qualities that make them trustworthy in the first place.

This beautifully demonstrates how blockchain follows human 'dimensional thinking'. Security (interests) and decentralisation (evaluation) are interconnected. Together, they determine the possibilities of scalability (relevance).

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Dive deeper

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Carbon pricing trilemma

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R. Eccles - Resolving the Carbon Pricing Trilemma: A Research-Backed Framework for a Fiscally Sound, Politically Durable, and ClimateEffective U.S. Strategy - 2025

Carbon pricing trilemma Climate Effectiveness: The policy must impose a price signal that is sufficiently high and predictable to drive meaningful, science-aligned emissions reductions and incentivize long-term investment in low-carbon technologies. Fiscal Sustainability: The policy must generate and allocate revenue in a manner that is seen as responsible, contributing to long-term fiscal health without creating unsustainable new entitlements or exacerbating inflationary pressures. Political Viability: The policy must be designed to build and maintain a broad and durable coalition, protecting the economic interests of households, ensuring the competitiveness of domestic industry, and proving resilient to partisan attacks and shifts in political power. This requires a bi-partisan design that creates a "grand bargain" addressing the core priorities of different constituencies.

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Energy trilemma

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World Energy Council
The World Energy Council's Energy Trilemma Online Tool provides an interactive display of the current World Energy Trilemma results and analysis at the regional and country level, breaking down performance across three dimensions; energy security, energy equity, and environmental sustainability. The tool also presents the latest World Energy Trilemma Index rankings, measuring a country's overall performance, as well as a balance grade highlighting how well a country manages the trade-offs of between the dimensions, with "A" being the best.
https://trilemma.worldenergy.org/

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