Open borders are expected to yield a number of global benefits. The majority of the benefits accrue to the migrants themselves, while some accrue to immigrant-receiving countries and immigrant-sending countries. But there are also other benefits of a more diffuse nature that are experienced throughout the world.

• Double world GDP:World GDP will experience a one-time boost of about 50-150%
• End of poverty: The GDP gains will be felt most by the world’s poorest, and absolute poverty will reduce dramatically. This will benefit the whole world, even those not living in poor countries, as there will, for instance, be fewer dangers of communicable diseases originating in these countries.
• One world: As kinship and friendship networks spread across the world, this helps strengthen the ties between countries, leading to more trade and mutual gain, with less war and hostility. Cutting-edge ideas developed in one part of the world spread rapidly to others.
• Innovation case for open borders: When people are free to move across borders, human capital can be allocated to more efficient uses, leading to greater innovation, much of which benefits the whole world due to the fundamentally non-rival nature of knowledge and ideas.
• Peace case for open borders: Building upon the one world theme, more open borders would lead to more peace as people with friends and kins in and from specific other countries would be less likely to support wars against those countries.