First-principles thinking remains the human edge in the agentic coding era
rseroter · x · 2026-09-30
Richard Seroter of Google highlights Sunil Sadasivan's essay, arguing that in the agentic era, understanding basic elements and building solutions from there is still what humans excel at.
The essay starts from Sunil Pai's "senior engineer death spiral"—accumulated experience becomes a trap when things change. The best senior engineers the author worked with, many from support, design, or self-taught backgrounds, shared one habit: first-principles thinking. They asked why something was being built and what it did for users, connecting the codebase to the outside world, which kept things simple. This also builds the momentum Pai describes—do the simplest thing you can accomplish first. The piece closes on the shift to agentic development: the people thriving with agents are usually the ones with that foundational understanding.
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