<prompt> Human: Source: NY Times - 04.17.13Full quote responding to this point - Around 75 percent of the index tracks government securities or other types of government-backed bonds. Less than 25 percent is in corporate bonds.: Because of this, says John C. Bogle, founder of the Vanguard Group, total bond indexes are deeply flawed and thats coming from an indexer. He adds that individual investors should keep only about one-third of their bond stake in Treasuries and government debt, reflecting the markets mix based on private investors such as pension and mutual funds. Investors might consider keeping half their money in a total bond market fund, he said, while shifting the other half to an intermediate corporate bond fund. By doing so, investors would end up with an overall strategy thats about two-thirds in corporate debt and one-third in government securities.I was looking into asset allocation strategies tonight, and this quote jumped out at me. I know rPF is full of Bogleheads, but I never see anyone recommending anything other than the Total Bond Market Fund VBMFX, and occasionally the Total Intl Bond Market Fund VTABX. Why is that? If I want to follow his advice, can any of you recommend a good intermediate corporate bond fund for my portfolio? Im going to assume the answer is VCIT, but are there any non-ETFs Vanguard offers that Im missing?EDIT: For those of you that are curious how you could achieve what Bogle is suggesting with Vanguard funds, you could do a 5050 split of VBMFX VFICX and youd end up with about 37 U.S. govt debt and 63 investment grade corporate bonds. I think Ive personally also decided to keep about 20 of my bonds in VTABX for further diversification.  <response>: cross-posting my response from rportfolios, since it might get more feedback hereThree reasons come immediately to mind.First, convincing people that they should have anything in bonds is so difficult when the market is going up and bond NAVs are sure to come down!.Second, those that do want them seem to have the majority of their investment via 401k, so its a take what is there thing.Lastly, convincing them to split the bonds in some way, especially since the target date funds dont carry corporate bonds, is just adding another layer.Interestingly, all of my bonds were in my 401k, which Im in the process of rolling over; I plan to do something similar to Bogles suggestion in the rollover IRA.Thanks for the link, by the way. 