Brainstorm time!
He doesn't. Always an option.
He thinks it will have low risk of self-improving AI, and will have positive impacts directly or from innovation or from changing culture.
He thinks it will lead to earlier self-improving AI, but thinks SI will be ready.
He thinks it will lead to earlier self-improving AI, and thinks of SI as just a hedge.
http://techcrunch.com/2012/08/21/vicarious-good-ventures-funding/
Discussion on Hacker News
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