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> because real problems are always more complicated than simple, inspirational ideas

Colonizing another planet 'is' a real problem?

Also, if we can 'just fix Earth' tell us how we convince all nations to come together and sing Kumbaya, put aside our resource differences and disarm all nuclear missiles (I'm looking at you North Korea)

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North Korea is nowhere close to the major issue there.

ya, def not as big as climate change etc.. i just finished lex fridman podcast on north korea so it was on my mind

That's a silly strawman argument; no one is seriously asking for this.

The point being made by GP is that there are very many reasons why modern civilization on Earth may be shortlived: climate change, biological war (or lab accident!), global thermonuclear war, economic failure modes, AI or AGI, large impact, etc. Fixing any one of these doesn't solve the same problem that redundancy would solve, and some of them require solving seemingly impossible coordination problems.

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