Once again, the chair of the Federal Reserve has weighed in on asset prices.

Yesterday, Janet Yellen said to Christine Lagarde, the head of the International Monetary Fund, that “equity market valuations at this point are quite high.” Her comment has prompted a certain amount of soul-searching in the media over whether Yellen should be talking about stock prices at all, whether she’s right, and, of course, what that means both for the market and for the future course of Fed actions.

Last night, a reader wrote in asking about a bold prediction by a “very successful financial advisor”: if Greece were to miss a payment and default on its debt, the market would fall 50 percent. Setting aside whether this financial advisor has moved all his clients to cash—and if he really believes in that idea, he certainly should—I very much disagree with his conclusion.

In my latest Market Thoughts video, I discuss the economy’s mixed performance in April, focusing on key economic indicators and the stock market. I also share how recent employment figures fit in with the recovery.

Every so often, you read something that makes so much sense you wonder why you didn’t write it yourself. Recently, I have run into a couple of articles I wish I had written, and I’d like to highlight them with some additional thoughts.

I know I’m a couple days late on the “fight of the century” theme. Apparently, there was a major boxing match the other night, which, characteristically, I missed.

Nonetheless, better late than never, especially since there’s another “fight” going on that will ultimately have a much bigger effect on our lives.

Once again, it’s time for our monthly update on risk factors that have proven to be good indicators of economic trouble ahead. As expected, the data hasn’t changed much from last month—it remains positive in almost all areas and has continued to improve in many cases—but it’s still important to keep an eye on things.

Reading over the statement from this week’s Federal Reserve meeting, it seems clear that the committee members are as confused as everyone else.

Today’s big headline is that U.S. economic growth came in at 0.2 percent for the first quarter of the year, well below already depressed expectations. In line with yesterday’s post, is this a sign of slowing growth?

One of the things I try to keep in mind is the possibility I might be wrong. (Hard to believe, I know, but stranger things have happened.)

Although I remain convinced the economy will continue to grow—and that weather and other transitory factors contributed to the lackluster first quarter—the continuing stream of weak economic reports at least suggests the opposite is also possible.

Today seems like a good time to pull out the wayback machine again, for a look at commodity and oil prices. I’ve focused quite a bit on oil prices here, and what they might mean for the U.S. economy, but other commodities are also important.