Simon Willison’s Weblog

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Sunday, 7th December 2025

What to try first?

Run Claude Code in a repo (whether you know it well or not) and ask a question about how something works. You'll see how it looks through the files to find the answer.

The next thing to try is a code change where you know exactly what you want but it's tedious to type. Describe it in detail and let Claude figure it out. If there is similar code that it should follow, tell it so. From there, you can build intuition about more complex changes that it might be good at. [...]

As conversation length grows, each message gets more expensive while Claude gets dumber. That's a bad trade! [...] Run /reset (or just quit and restart) to start over from scratch. Tell Claude to summarize the conversation so far to give you something to paste into the next chat if you want to save some of the context.

David Crespo, Oxide's internal tips on LLM use

# 8:33 pm / generative-ai, llms, ai-assisted-programming, oxide, coding-agents, claude-code

Using LLMs at Oxide (via) Thoughtful guidance from Bryan Cantrill, who evaluates applications of LLMs against Oxide's core values of responsibility, rigor, empathy, teamwork, and urgency.

# 9:28 pm / ai, generative-ai, llms, oxide, bryan-cantrill

Now I want to talk about how they're selling AI. The growth narrative of AI is that AI will disrupt labor markets. I use "disrupt" here in its most disreputable, tech bro sense.

The promise of AI – the promise AI companies make to investors – is that there will be AIs that can do your job, and when your boss fires you and replaces you with AI, he will keep half of your salary for himself, and give the other half to the AI company.

That's it.

That's the $13T growth story that MorganStanley is telling. It's why big investors and institutionals are giving AI companies hundreds of billions of dollars. And because they are piling in, normies are also getting sucked in, risking their retirement savings and their family's financial security.

Cory Doctorow, The Reverse Centaur’s Guide to Criticizing AI

# 9:28 pm / cory-doctorow, ai, ai-ethics

2025 » December

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