Hello!

We now have Google Docs-style collaborative editing on the Forum. (As a reminder, we announced many new features last week.)

We recommend:

1. Cause Exploration Prizes: Announcing our prizes (Chris Smith, Aaron Gertler, 2 min)
2. Puzzles for Everyone (Richard Y Chappell, 6 min)
3. Samotsvety's AI risk forecasts (elifland, 5 min)
4. Zzapp Malaria: More effective than bed nets? (Wanted: CTO, COO & Funding) (Yonatan Cale, 6 min)
5. An experiment eliciting relative estimates for Open Philanthropy’s 2018 AI safety grants (Nuno Sempere, 16 min)
6. "Agency" needs nuance (Evie Cottrell, 16 min)
7. What could an AI-caused existential catastrophe actually look like? (Benjamin Hilton, 80,000 Hours, 11 min)
8. Could it be a (bad) lock-in to replace factory farming with alternative protein? (Fai, 11 min) 
9. Differential technology development: preprint on the concept (Hamish Hobbs, jbs, Allan Dafoe, 3 min)
10. Much EA value comes from being a Schelling point (LRudL, 12 min)

Announcements: 

1. Apply now - EAGxVirtual (21-23 Oct) (Alex Berezhnoi)
2. Save the Date: EAGx LatAm (LGlez)
3. [Job] Project Manager: Community Health (Ben West)
4. CEA Ops is now EV Ops (EV Ops)
5. Join ASAP (AI Safety Accountability Programme) (TheMcDouglas)
6. Announcing an Empirical AI Safety Program (Josh1)

Classic Forum post:

•  ​​Potential downsides of using explicit probabilities (Michael Aird)