📖 The ACX 2025 Prediction Contest Is Open!

The Astral Codex Ten Prediction Contest is back with an expanded $10,000 prize pool! Test your forecasting skills across geopolitics, technology, economics, and more with questions curated by Scott Alexander. Make your predictions by January 31 to compete.

🔭 The Bridgewater x Metaculus Forecasting Contest Goes Global — Feb 3

For the second year, Metaculus is teaming up with Bridgewater Associates to host a competition featuring $25k in prizes and potential opportunities with the asset management firm — and this year, forecasters from around the globe can compete.

Start here to register for the February 3rd competition, warm up on practice questions, and learn about the separate Open and Undergraduate leaderboards.

M

Question

When will California's High-Speed Rail be open for service between San Francisco and Anaheim?

7
1
Total Forecasters11
Community Prediction2047-12-29 (2041-10-01 - 2060-01-01)

Make a Prediction

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CDF

weight:
My Prediction
community
<2030-01-01
lower 25%
median
upper 75%
>2060-01-01
...
...
...
...
...
1.2%
2041-10-01 04:33
2047-12-29 15:32
>2060-01-01 00:00
26.6%
Authors:
Matthew_Barnett
Opened:
Closes:
Scheduled resolution:
Verity
Economy & Business
Anaheim, California
Anaheim Regional Transportation Intermodal Center
Union Station (Los Angeles)
Downtown Los Angeles
San Diego County, California
Sacramento, California
Phase 1
Central Valley (California)
California High-Speed Rail
San Francisco

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