At Lifeboat Foundation, we read every letter received and respond to as many as possible! But there are too many letters for our staff to conceivably answer every individual query. So, since many of the following questions have not been covered in our general FAQ, we decided to create a forum for the overflow.
Assuming the “grey goo” scenario is inevitable, how do you know that someone won’t bring a stray replicator on a space colony just before they start devouring the earth?On its own, grey goo could not escape Earth’s gravity field, so in that respect a space colony would be safer. However, strict security measures to check people for nano-built weapons and self-replicators before they board space colonies would be essential.
By the way, this is a good reason to launch lifeboats as early as possible. It would be easier to search a person for grey goo than to search a biosphere but easier is not the same as easy!