The world economy is still recovering from the consumer credit crisis where spend exceeded world assets.
This has created a bear market where spending moves from terrtiary industry(professional services) to primary industry (natural assets).
(Conservative)
A Bull market is when spending moves from primary industry (natural assets) to professional services(tertiary industry/3rd industry).
(Radical)
The secondary industry is manufacturing, processing or natural assets etc.
(Average)
it is just a cycle of going from Bear to Bulls Market.
Then the economy crashes like in 1929 when Stock brokers were jumping out the window.
When crisis breaks out, suddenly natural assets like Gold are worth lots and a good time to sell and make massive profit just before the economy starts to recover.
Bear Market, Bull Market, Bear Market, Bull Market........
Thats what investment bankers do is just buy and sell.
When the economy goes into recession, typically it is the end of a Bull market where all the shares of tertiary industry are dumped
and this reduces share value even further, and pushes up
value of natural assets.
Basic supply and demand creates actual value.