I have seen the reference to 10-15 year time frames for stacking, and to be honest, I do not see it.
I look at the USA and it's creative accounting measures.
The EU markets are in a mess, and unlikely to turnaround in the next 10 or so years. ie Spain, Portugal, Italy, Greece, Ireland et al.
Japan, for want of a better description is underwater.
China has it's own very large problems which has the potential to affect Australia and South America substantially.
The UK, from an outsiders viewpoint is degenerating fast and France is not too far behind.
Globally, the world is in a mess.
Whilst I do not have a crystal ball to see into the future, I would not be surprised if we were in a full-blown depression within 3-5 years. 10-15 years stacking time is, in my view, incredibly optimistic and possibly myopic!
Whilst I do not like the possibility, and wish I was wrong, I can at this stage only conclude that a depression is not to far away.