Pointedstick wrote:
Of course that's the problem: what does the right time look like?
When the world isn't in the grips of a deflationary spiral?

The PP is about Prosperity with hedges. It's not completely neutral in the sense that you can just put it on at in any economic environment and make a profit in the short-term or without any pain along the way. If you time it wrong, you will suffer for up to a couple of years. This is a big issue for lump sum investing because dollar cost averaging along the way reduces the pain.
So far we've had a gold bull hold up the 70's, and a dual stock/bond bull that held up the 80's, 90's, 00's. How experienced do you feel the PP has been in an environment where two/three non-cash assets are bearish long-term? Japan comes to mind. You've got to lower your expectations if you're going to remain a purist.
Here's what I currently expect as of this date. Since the rest of the world is in the process of crashing and burning, it will benefit the U.S. due to flight of safety. So the economy should go up for another two years, gold should bottom later this year and I'm unclear about bonds but I suspect it will also benefit for the next two years since there's room to reach 0% like the rest of the world, but you can't know that ahead of time. Confidence is tenuous. But it seems clear that after the drama is all over these next several years, we're going to be looking at a one world currency to replace the USD when all is said and done. So I don't think its time to panic yet and being in the equivalent of Rome with the world's reserve currency, we're tremendously cushioned. But the end is certainly nearer.