No Global Framework for First Contact: SETI Protocols and a Century-Long Timeline
To the point
Experts Seth Shostak and Stephen Hawking say alien contact would most likely arrive as a distant radio signal rather than ships, that SETI has guidelines but no binding global plan or formal international framework, that coordinating a response would be impractical due to vast timescales, that Active SETI is risky, and that past near misses such as the 1997 false alarm show there is no ready plan and any contact would unfold over centuries rather than minutes.