Peter Van Dijck

" Evals are a definition of what good looks like. "

" Agents are literally models using tools in a loop—they respond to themselves and the tools in chat-like conversations. "

" By starting to categorize risk in detail, you naturally lead to better prompts and better evals. "

" Confidence scores from the model are not a good idea because the model has no memory. "

" Contextual navigation is really powerful — these AI-generated prompts help you dig deeper into a topic. "

" Context design and context engineering mean figuring out and building what needs to go into that text file sent to the model. "

" AI products almost always have both open-ended inputs and outputs, which makes testing really hard. "

" Models are stateless; they take input and give output and forget everything immediately after. "

" Building evals is like building tests to know if your AI system is good enough, and you can rerun them as models improve. "

" Sometimes you have to build stuff and learn from it rather than wait for the perfect moment or tools. "

" There’s a lot of steps behind the scenes to make conversations useful and safe. "