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Hostile intelligences would presumably still create Dyson spheres/colonise the galaxy/emit radio waves/do something to alert other civilisations to their presence. The Fermi paradox has to be something like superweapons, not superintelllegnece.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.