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Should You Let Them Build It in Rails?
You cannot judge a framework you cannot read, and comparing frameworks across ecosystems mostly produces noise. Here is what a non-technical founder can actually check when someone proposes Ruby on Rails.
· Paul Keen
Autonomous Agent Teams Succeed 13% to 59% of the Time
Six multi-agent frameworks, measured across coding and reasoning benchmarks. Then the pattern both the loudest sceptic and the loudest proponent ended up agreeing on: many agents may think, one agent writes.
· Paul Keen
"Generate Then Verify" Moved Your Work. It Didn't Remove It.
81% of engineering teams report spending more time in code review since adopting AI tools. The advice assumes checking is the cheap half. Measurement says that is where the hours went.
· Paul Keen
Your AI Reviewer Approved It. Did It Read Its Own Report?
Our AI code reviewer found a SQL injection, described it accurately, and set the verdict to approve in the same response. Here is what we changed.
What Senior Devs Catch That AI Misses
A change swapped a made-up number for a confident, wrong explanation of how Propshaft works. Spotting the difference is the thing you are actually hiring for.
· Paul Keen
Your Link Checker Is Probably Checking Nothing
We planted eight defects in our own CI. Three were caught. One gate was skipping 133,874 of 149,516 links and reporting green. Here is the command that proves it.
· Paul Keen
How We Replicated a Product Team With Claude Code Agents
Solo Claude Code agents ship like solo developers - missing PM, designer, QA, customer voice. Here is the team-mode setup running Shape Up plus XP plus reflection-driven Kaizen.
· JetThoughts Team
TDD Without the Overkill: Why Lightweight TDD Ships Faster
TDD looks slow on paper. The real ledger is one hour writing tests against six hours debugging next week. Here is why lightweight TDD wins.
· JetThoughts Team
The TDD Refactor Step in Ruby: A 3-Line Discipline
The refactor step breaks more tests than green ever does. Cap each refactor commit at three lines of Ruby and the suite stays green every time.
· JetThoughts Team
The Engineering Unlocks Behind DeepSeek | YC Decoded
DeepSeek R1 engineering breakdown from the YC Decoded video: V3 efficiency, reinforcement learning, mixture of experts, and what the $5.6M training figure covers ✓
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