While I have had a PP for a while, I just realized I may have been over- analyzing things.
Is this reasoning correct....
1. There are two items in a portfolio, that being savings and investments. Savings should be a store of value. Investments should (hopefully) increase in value but also run the risk of losing some or all of their value
2. Savings = Gold and Cash, Investments = Bonds and Shares.
The HBPP is an equal split between Savings and Investments. Basically a Barbell Portfolio similar to that espoused by Nassim Taleb
Taking it further....
An elderly person who could not recover from a large loss may have a larger savings component. Say 35% Cash, 35% Gold and a smaller investment component. Say 15% Shares, 15% LTT
An younger person may be in the opposite situation, say 30% Savings, 70% Investments
Is it really just as simple as that??
(and all the time I spent on efficient frontiers, standard deviation etc were a waste of time

Hal