QURI (Quantified Uncertainty Research Institute) — fiscal-sponsor: sid_t0p43V5oLA

Note: The source confirms that QURI is fiscally sponsored by Rethink Priorities as of 2023, which matches the claim's timeframe. However, the source does not provide the specific identifier 't0p43V5oLA' for Rethink Priorities or its Special Projects Program. The claim includes a specific code/identifier that cannot be verified against the source text. The source confirms the fiscal sponsor and year, but not the specific identifier referenced in the claim.