Your Robot Doesn't Need a Vector Store — It Needs a Memory System

Last Tuesday, our robot walked into the kitchen for the 31st time that week. Same route. Same question: "What should I prepare for lunch?" It had already asked that question. And answered it. And remembered the answer "” for exactly 8 hours, until the vector 's TTL kicked in and silently wiped it clean. That's when I understood: vector databases are solving the wrong problem for embodied AI. The Semantic Search Trap Vector databases are brilliant at one thing: finding similar things. "Show me documents about cooking." "Find images that look like this." Great. Wonderful.