Re: John Maynard Keynes
@AC
The Keynsian response is to do something, even if it is to pay people to bury money, because they earn, they spend (UK GOv gets the VAT on spending). They buy materials from someone, who now has money, which they spend. It creates employment, the Government taxes the employment... and gets a nice new bit of infrastructure.
It worked in the '30s. The US is the easiest to think about - road building and the Hoover Dam.
Now it's a bit different. We would buy all the steel (or whatever) from China, so no cash in our economy. We'd get cheap labour from other EU countries to turn up and do the work, who would send the funds back home. No cash in our economy. Then we'd get Capita to run the IT (into the ground) and just pay cash to shareholders, most of whom already have the cash to spend. All of the contractors would be based in Lichtenstein and pay next to no tax.
Spend to grow isn't as simple as it used to be.