[Steuard]

Proponents of index funds have been proposing exactly this sort of portfolio for about 40 years. (Well, okay, 40 years ago was the origin of the first index fund, Vanguard's S&P 500 tracker; a portfolio amalgamating three market segments like this would only have become possible somewhat later.) The specific 60/40 stock/bond mix here (with moderate international exposure) is solidly in the "bog standard investment advice" category, too: I wouldn't be surprised if it's what most people would choose if they wanted to avoid accusations of post hoc selection bias. (In fact, that's my only point of concern with the choice: it's a distribution that I associate more with mildly cautious middle aged families than with major institutions. But I think that's the point.)

I think that just about any indexing fan would be perfectly content to say, "Yeah, please feel free to track this mix into the future, too." It's one size fits all investment advice, but again, that's pretty close to what index funds are all about.

[wiredfool]

It's within a few percentage points of the holdings of the Vanguard LifeStrategy Moderate Growth Fund (VSMGX). There's a little more international in that, and there's an international bond fund included. And there's the 0.16 cost ratio, rather than 0.19.