I gave a prompt and it stright up hallucinated. My prompt was about writing an article about the advantages and disadvantages of rust in the robotics ecosystem. It claimed that google cartographer was written in rust. The annoying thing about this is that it was quite convincing, I found the citation it used to be geeks for geeks blogspam that did not mention cartographer any where so I went and checked it was a C++ only project. Its worrisome when you see people relying on llms for knowledge.