Heterodox
Not that affordability is relevant from the MMT POV, but it's worth looking at anyway. "They" view it conventionally in terms of the interest rate "r," that is, the policy rate, and the growth rate "g" measured as change in GDP.This is the ratio of r to g, or "r : g". As long as r is greater than g, "they" consider the increasing interest affordable. In fact, "r > g" has become a meme and entered the jargon since the publication of Thomas Piketty's Capital in the Twenty–First...
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