Comment by mjburgess

Its better to see gov debt in cost-of-repayment terms rather than an absolute figure. The total is really irrelevant.

Atm in the US, it's 16% of the budget goes on repayments, or ~3.5% of GDP.

Likewise in the UK, it's ~12% at ~3.5% GDP

I suspect it's fairly easy for a society to this level