--- title: Blog url: 'https://mcavdar.com/' markdown: 'https://mcavdar.com/index.md' date: '2026-07-28' --- # Blog 22nd Sep 2026 ##### [DeepAgents Creates a File You Can't Find](https://mcavdar.com/blog/deepagents-creates-a-file-you-cant-find) If you're just getting started with [DeepAgents](https://docs.langchain.com/oss/python/deepagents/overview), there's a behavior that can be a little confusing. You ask the agent to create a file like `test.txt`, it says the file was created, but then you run `ls` or `find` in your terminal and nothing. DeepAgents, this is actually expected if you're using... [langchain](https://mcavdar.com/tag:langchain#body-wrapper) [langgraph](https://mcavdar.com/tag:langgraph#body-wrapper) [deepagents](https://mcavdar.com/tag:deepagents#body-wrapper) [FilesystemBackend](https://mcavdar.com/tag:FilesystemBackend#body-wrapper) [StateBackend](https://mcavdar.com/tag:StateBackend#body-wrapper) [llm](https://mcavdar.com/tag:llm#body-wrapper) [Agentic-AI](https://mcavdar.com/tag:Agentic-AI#body-wrapper) 7th Aug 2026 ##### [A Small Experiment on Meta's Open Research Direction](https://mcavdar.com/blog/a-small-experiment-on-metas-open-research-direction) Recently, Yann LeCun has argued that Meta is becoming less committed to open research. I was curious whether there was a small, measurable signal that might reflect this idea. I analyzed every repository in the facebookresearch GitHub. Since GitHub's API doesn't expose archive dates, I scraped the... [meta](https://mcavdar.com/tag:meta#body-wrapper) [github](https://mcavdar.com/tag:github#body-wrapper) [open-source](https://mcavdar.com/tag:open-source#body-wrapper) [yann-lecun](https://mcavdar.com/tag:yann-lecun#body-wrapper) 28th Jul 2026 ##### [Amazon vs ChatGPT: Who Should You Trust on the Internet?](https://mcavdar.com/blog/amazon-vs-chatgpt-who-should-you-trust-on-the-internet) Even Big Names Can Be Wrong: Why You Shouldn’t Trust Everything on the Internet > A hospital booking application: an example of Docker > > For example, a hospital wants to make an appointment booking application. The end users may use the app on Android, iOS, Windows machine, MacBook, or via the hos... 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