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Fffej (auto-discovered)

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05:36
2026-09-28
fffej.substack.com
large-language-models

Decisions as a Service

A developer built two open-source tools on top of Jev, a new LLM from TypeSafe that returns calibrated probabilities for yes/no decisions instead of generating text. One tool, bscheck, scores document…

22:36
2026-09-21
fffej.substack.com
large-language-models

Entropy Is Spare Capacity

A developer built a steganographic encoder that hides arbitrary binary data inside LLM-generated prose by exploiting the probability distribution over the model's top-20 next-token candidates, partiti…

05:30
2026-09-07
fffej.substack.com
ai-agents

Local gains don’t move a system

A developer argues that AI-driven productivity gains at individual steps rarely improve overall delivery because local optimizations miss the system's real constraint. Citing Goldratt's Theory of Cons…

07:22
2026-08-24
fffej.substack.com
artificial-intelligence

AI is going to break our software priors

A developer argues that AI-generated code is invalidating traditional software quality assumptions, warning that measuring bug rates early in the AI coding era may be misleading. Because AI is likely …