[martey]

My point is that you explicitly claimed that human interstellar travel is possible with current nuclear propulsion methods. Project Orion doesn't support this claim (since Dyson's models require a number of nuclear weapons several orders of magnitude larger that current stockpiles). Other similar projects don't support this claim either, since they use unmanned spacecraft. I referenced the Stross blog posts because finding a reasonable propulsion system is only one new technology that needs to be invented before human interstellar travel is possible.

If you have other sources (Wikipedia articles or otherwise) that suggest differently, please feel free to post them.