Remembering what just disappeared.

A short-lived record of what was seen

Stage 4 introduced temporary visual working memory lasting up to three seconds, retaining source and confidence information and clearing on restart. Two simulator sensing probes then removed recently observed objects from the perception data.

Both probes returned STOP_AND_SENSE. Neither issued a hand action. This demonstrates the tested response to the injected disappearance.

The limit of the result

The dropout was artificial, not caused by a physical occluder in the world. The baseline also stopped, so the experiment did not demonstrate a behavioural advantage from the new memory mechanism.

No automatic follow-up sensing or recovery was established. There were no new learned events, and the primary store still contained one observation. The milestone is the temporary-memory implementation and bounded sensing checks; real occlusion, recovery and useful downstream learning remain further questions.