Free money

A lot of people, some of whom should know better, seem to think that a low interest loan is the same as free money. Here Ezra Klein argues that the US government should take advantage of the current low interest rates to borrow a lot of money. This is not a good reason for individuals to borrow money and it isn't a good reason for the government to borrow money. If the money is going to wasted, as I expect most of it would be, a low interest rate doesn't help a lot.