Retrodict

Retrodict looks at one photo and works out what most likely happened before it was taken: the steps, their order, and when, with the evidence for each step outlined in the photo. It reads the clues a scene carries (peels, a lid set aside, a spoon left in a bowl, a cap lying by a glass), proposes what happened, finds the evidence with SAM 3.1, and has an investigator agent and an independent checker confirm every fact. Times come only from physical clues, like cut fruit that is still pale or a spill that is still wet. A rewind walks the real photo back step by step, and a proof rewind plays it next to the real video of the scene, backward. Tested on two real kitchen videos with answer keys written before the runs, it found 8 of 8 and 7 of 8 real events, and every time it gave contained the real time. Try it in the browser: https://muralikrishnagr.github.io/retrodict/live/