There cannot be an unified logic because two groups of people are competiting for the same place. When there is competition there will be a divide. Like corporations, politicians will try to carve a niche and play us vs. them.
US politics is somewhat close to a "Socially Optimal Solution". Assume we are in a 2D plane of political views. Your location in ... (more)
IMHO, Presidential system never really worked anywhere other than the US. Except for the US and to some extent Brazil & South Korea, no major democracy uses the system. Presidential forms historically have low checks on balances that allows a single person to get too powerful. US had methodically built a system of checks and balances (even at the cost of ... (more)