The speed of a system is set by its longest serial dependency chain, which is a property of the architecture and cannot be parallelised away afterwards.

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• Complex systems are never fast, because they have too many parts with poorly understood interactions to be optimized. RPRob Pike6 Dec 2023
• Performance test results are highly dependent on the specific machine, library versions, and other components used, making them hard to compare over time. DSDaniel Stenberg14 Aug 2026
• Everyone on a team who makes architectural decisions must understand performance, because a codebase that can be optimized later only ends up that way on purpose. CMCasey Muratori26 Aug 2026
• Asynchrony should be a property of how a program is run, not a colour baked into the type of every function in the standard library. BNBob Nystrom1 Feb 2015
• Organisational fixes are slow because they have to drain years of accumulated state, and that same slowness is what makes them durable once they take. WLWill Larson17 Jun 2018

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