Jerry,
Well, it's already 11 am here, but I have to go the train station in a few minutes.
You are welcome to discuss "passive investing" on this forum. Vanguard is famous for its index funds. So, it's obviously not a problem. You just need to remember that Vanguard is also known for some top quality managed funds.
It is certainly a reasonable strategy to construct a diversified portfolio that includes index funds. You need to be clear, however, that index funds also "time the market" since they typically use market cap to weight company holdings. Managed funds simply use additional criteria besides market cap. The two approaches are actually not totally different.
Personally, I question the use of market cap as a primary criteria for stock selection. I don't think that size = market. But, that's just my call.
In terms of choosing specific managed funds for a diversified portfolio, for me it's a little like picking athletes for the Olympics or like picking a tennis tournament winner. You consider past performance, current fitness, health, interviews, performance consistency, teamwork, etc.
For mutual fund investors, there's past performance relative to benchmark, bear market performance, shareholder letters, M* ratings and analysis, interviews, etc. Obviously famous investors like Buffett, Heebner, or McGregor can make mistakes and may one day "lose their touch". But when these guys manage to outperform year after year, I give them some credit. I choose to invest in their funds. That's my call.
Looking at global funds recently, I observed that a terrific Vanguard fund VHGEX has outperformed global indexes and most other mutual fund company funds for a long time. I was disappointed by the highly defensive reaction by certain DHs to my praise for a Vanguard fund.
This example demonstrates the core of the problem, as far as I'm concerned.
Off to the station ...