Currency used to be tied to gold as a promise to pay, but Tony Blair sold all our gold off (for a fraction of what its worth today).
Now. The old noted said I promise to pay the bearer on demand the sum of X pounds, basically for every £1 in circulation, there was the equivelent
of gold held by the bank of england. You could have for example go to the bank of england & give them the promise to pay £5 note & in exchange have £5
worth of gold (in theory - but obviously not practice).
Utter crap, and the rest was worse. The gold standard hasnt been in existance since before WW2 so nothing to do with TB.
Zpyder,
Physical money is printed by the government and banks, it is handed out for services and products. In Scotland varous banks print Scottish bank notes whereas in England only the Bank of England does so. Money is paid to people for work and produce, that in turn is either used to buy new products to sell, employ workers or pay for materials. The money just circulates, one person handing it over to the next, with the government syphoning off their share. The exact amount in cirucuation doesnt matter anymore, much of it is electronic money anyway. Money is a way to measure work and profit rather than an item in itself.
Issues arise when people dont think that the money paid is enough for their goods, the result is inflation, prices move up and wages try to keep pace, then its another cycle and keeps going. It doesnt matter if the wages or the prices go up first, both cause the same effect. This is the big reason why it would be very bad if they Royal mint just printed and handed out money, it would quickly become worthless. Being a measure of product it has to be kept within reasonable amounts. If it gets out of control you end up with something like the German mark during the 1930s or the present day Zimbabwe dollar, and it costs millions or billions to buy a loaf of bread.
Interest only comes into this when someone borrows money, it is effectively an incentive for the lender to part with and possibly risk their money, although a go between like a bank will expect some of it to pay for the service they offer.
The present banking problem comes in with people borrowing large amounts for housing in the US, the banks, seeing a large potential profit loaned out huge amounts. Some of this they borrowed from other institutions, the rest was paid in by individuals. Then the crunch came, it was obvious that they had loaned all this money which suddenly became apparent that they were not going to get it all back. The institutions and individuals who had originally loaned the money to the banks wanted it back, except it is invested in houses. So the house owners dont have the money to pay the banks and the banks dont have the money to repay those who have given them loans. The result is the banks get stretched out. Technically they have the houses as colateral, but in reality they are in financial problems because they cant pay back what they owe on demand. This isnt the first time its happened either, look up the Great depression.