As you see, the size of the debt isn't historically particularly large.I'm not convinced that a 1.6 trillion pound debt owed by a country which is borrowing billions to give away to other countries makes any sense at all and the concept makes the debt even more terrifying. I am very much in favour of reducing our country's outgoings on this type of vanity exercise
As for both borrowing and lending, all leading countries do the same and it is not as nonsensical as it superficially looks.
Net indebtedness is the way in which currencies can be valued relative to each other, and known currency value relationships are what makes world trade possible. That's what ratings indices like the Standard and Poors one are all about.
Without net debt no value could be attributed to a country and currency to enable trade and we'd be reduced to racially based and/or prejudicial judgments with all their hopeless inaccuracies.
Since we have been downgraded one small step at present, our net debt situation relative to our GDP is a bit too high. Therefore the current task is to reach balance, i.e. preventing any further growth in the debt, and then follow by either increasing our GDP or reducing the debt. Which is chosen will be determined by the national and international prospects at the time.
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