In times of extreme uncertainty, which we will certainly be entering in the coming months and years, one needs to know what asset classes to diversify into. I don't see the U.S. being around, in it's current form, for very much longer. Saying this, check out the "risk pyramid" to figure out what you should own in a coming deflationary depression.
Notice the two most important assets:
2) Cash (physical dollars, not electronic credits in a bank account)
41 minutes ago