# 2019-11-21

What the record holds about this day.


## Became true

- [OpenAI](/record/openai.md) | announcement | Benchmarking safe exploration in deep reinforcement learning | valid 2019-11-21 to present | conf 0.50 | valid | [clm_A995F95A733A](/claim/clm_A995F95A733A.md)
- [OpenAI](/record/openai.md) | announcement | Safety Gym | valid 2019-11-21 to present | conf 0.50 | valid | [clm_EA0EC6D395B2](/claim/clm_EA0EC6D395B2.md)

## Stopped being true

- none

## Recorded or changed on this day

- none

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.