I think part of section 1 seems a little flippant. You’re right that the Congo isn’t going to invade Portugal militarily, but recent history has shown us very clearly that a) millions of people can and will move from the third world to the first world and b) stopping this from happening is extremely hard, if not impossible, for democracies. If even a fraction of the 3 billion Africans that will exist in the near future come to Europe (or indeed America), then between dysgenesis will matter for these countries.