A primary complaint about low volatility was that it favored the rise of passive investing strategies such as exchange-traded funds, which try to mimic the performance of indexes and don't reward strong companies or punish those that are weak. By one measure, total assets in index funds and ETFs have soared to $6.6 trillion.

The spread of this blind approach to investing led the analysts at Sanford C. Bernstein & Co. to publish a research report in 2016 with the title “The Silent Road to Serfdom: Why Passive Investing is Worse Than Marxism.” They wrote that “a supposedly capitalist economy where the only investment is passive is worse than either a centrally planned economy or an economy with active market led capital management.”

Perhaps the first sign markets may be getting back to normal is the performance of active managers. A Hedge Fund Research index of equity managers gained 9.98 percent last year, woefully trailing the S&P 500 Index's 19.4 percent gain.

But since the turmoil in markets began at the start of February, the hedge fund index has lost just 2.22 percent through April 11, holding up better than the 6.37 percent drop in the S&P 500, which can be used as a proxy for passive investments. Bank of America data show that 57 percent of all large-cap mutual funds beat benchmarks in the first three months of the year, the best first quarter since 2009, according to Bloomberg News's Lu Wang.

Somewhere along the line, the word “volatility” became code for a declining stock market. The reality is that rising volatility as measured by the CBOE Volatility Index, or VIX, “is only a reflection of volatile movements in the market — it is not a predictor of future returns,” David Kotok, the head of Cumberland Advisors, wrote in a Friday note to the wealth management firm's clients.

Although the VIX has risen from a record low of below 10 in November to above 30 in February, that doesn't necessarily portend trouble. Kotok points out that whenever the VIX has doubled in a period of three months, the S&P 500 has gained an average of 6.31 percent in the following six months. The S&P 500's average six-month return is 4.37 percent since 1990.

The reasons for last year's low volatility are pretty apparent. First, there's little room for surprise when the Federal Reserve is telling you what it's going to do, when it's going to do it and by how much. Second, the Trump administration was focused on such market-friendly moves as reducing regulations and cutting corporate taxes.

But now, markets are getting back to normal. The ride may feel extra bumpy and gut-wrenching, but that's only because of last year's abnormally calm conditions. At 17.5 on Friday, the VIX isn't far from its historical average of 19.35. I say embrace the current conditions, if only because markets are fun again.

This column does not necessarily reflect the opinion of the editorial board or Bloomberg LP and its owners.