Vaughn Grissom fired a creative bounce pass to Oswald Peraza to complete a double play during the Los Angeles Angels' 5-1 win over the St. Louis Cardinals.

We introduce ECHo (Event Causality Inference via Human-Centric Reasoning), a diagnostic dataset of event causality inference grounded in visio-linguistic social scenarios. ECHo employs real-world human-centric deductive information building on a television crime drama. ECHo requires the Theory-of-Mind (ToM) ability to understand and reason about social interactions based on multimodal information. Using ECHo, we propose a unified Chain-of-Thought (CoT) framework to assess the reasoning capability of current AI systems. Our ToM-enhanced CoT pipeline accommodates various large foundation models in both zero-shot and few-shot visio-linguistic reasoning. We use this framework to scrutinize recent large foundation models such as InstructGPT and MiniGPT-4 on three diagnostic human-centric tasks. Further analysis demonstrates ECHo as a challenging dataset to expose imperfections and inconsistencies in reasoning. Our data and code are publicly available at https://github.com/YuxiXie/ECHo.

John Young (left) and Gus Grissom flew on the first crewed Gemini flight, Gemini 3, on March 23, 1965. Here, they're shown in the spacecraft simulator at the McDonnell plant in St. Louis. One additional "passenger" on the real flight was a corned-beef sandwich that Young smuggled aboard in his pocket. While John Young, who died on Jan. 5 at age 87, is famous for his Apollo 16 moonwalks and his role as commander of the first space shuttle mission, the NASA astronaut is also remembered for a small scandal he triggered with a sneaky act: smuggling a corned-beef sandwich into space. Young slipped the sandwich into his pocket just before launching on Gemini 3 on March 23, 1965.