LLM Impossibility List
If someone asked me, “What’s changed this year in LLMs”, here’s my list:" Prompt engineering is out. Evals are in. https://www.linkedin.com/feed/update/urn%3Ali%3Ashare%3A7335146366681194496/ Hallucinations are fewer and solvable by double-checking. https://www.linkedin.com/feed/update/urn%3Ali%3Ashare%3A7326902628490059776/ LLMs are great for throwaway code / tools. https://www.linkedin.com/feed/update/urn%3Ali%3AugcPost%3A7319277426029539329/ LLMs can analyze data. No more Excel. https://www.linkedin.com/feed/update/urn%3Ali%3Aactivity%3A7345062233996988417/ LLMs are good psychologists. https://www.linkedin.com/feed/update/urn%3Ali%3Ashare%3A7326504476712808449/ Image generation is much better. https://www.linkedin.com/feed/update/urn%3Ali%3AugcPost%3A7304716144379076608/ LLMs can speak well enough to co-host a panel. https://www.linkedin.com/feed/update/urn%3Ali%3Ashare%3A7283025621503356930/ … and create podcasts. https://www.linkedin.com/feed/update/urn%3Ali%3Ashare%3A7326544867734540288/ But: LLMs are still not great at slides. https://www.linkedin.com/feed/update/urn%3Ali%3Ashare%3A7311066572113002497/ LLMs still can’t follow a data visualization style guide. LLMs can’t yet create good sketch notes. Apr 2026: With Nano Banana, they can, and Nano Banana Pro doesn’t even make spelling mistakes. LLMs still draw bounding boxes as well as specialized models. ~Agents (LLMs running tools in a loop) can think only for 6 min. Apr 2026: With Opus 4.6 and GPT 5.4, agents run for several hours independently. What’s on your list of things LLMs still can’t do? ...