Any one know Elon Mushk here​

According to the article, what are some of the drawbacks of traditional intelligence tests, and what is being done to rectify these issues?

What is the rationale for government provision of education? -not all incomes are equal, but everyone has the right to education regardless of wealth. -potential students consider only their personal benefits gained from education, but the rest of society benefits, too. -no education would be provided in the absence of government provision because everyone would consume it without paying. -the cost of providing education for the entire public is too large. -the government can provide education at a much lower cost than the private sector.

Briefly explain one difference in the practice of realpolitik by louis napoleon and otto von bismarck.