Adam M. Grossman

WHEN YOU WERE growing up, did you ever hear stories like these?

“If you swallow gum, it will stay in your stomach for seven years.”
“If you keep making that face, it will freeze that way.”
“If you drink coffee, it will stunt your growth.”
“If you watch too much TV, your eyes will turn square.”

In hindsight, these stories are funny and harmless. But problems can arise if, as adults, we make important decisions based on misinformation.

IN THE SUMMER of 1789, George Washington got into a dispute with his Postmaster General—a fellow named Ebenezer Hazard—and removed him from office.
Looking for a new profession, Hazard decided to start an insurance company. He called his new firm the Insurance Company of North America and specialized in providing life insurance to ship captains. The business was a perfect fit for the times and quickly prospered. Still, I’m sure that even Hazard would be surprised to see his company still in business more than two centuries later.

“THERE ARE TWO kinds of people in the world…” There are Republicans and Democrats. Right-brained and left-brained. Yankees fans and Red Sox fans. And, of course, Starbucks people and Dunkin’ Donuts people.
In Boston, where Dunkin’ was founded and where I live, this is a particularly strong theme. Dunkin’ people and Starbucks people see themselves as very different. Starbucks aficionados see it as a higher-quality experience and don’t mind paying for it. Meanwhile, Dunkin’ fans are proud of their frugality and think that the people over at Starbucks are overpaying.

IN HER BESTSELLING book Thinking in Bets, retired poker champion Annie Duke stresses an important point: As kids in school, it was regarded as a failure if we ever answered a question, “I don’t know.” But in the world outside the classroom, the only honest answer to many questions is, “I don’t know” or “I’m not sure.” This isn’t due to ignorance. Rather, it’s because, in many cases, the precise right answer simply isn’t knowable.

MUCH PERSONAL finance literature, including most of what I write, focuses on how to handle money—how much to save, which investments to buy, and so forth. But what if you have a more fundamental question: How do I earn more in the first place?
To help answer that question, I have five new summer reading recommendations. Each of these books offers strategies to help you increase your productivity—and your happiness—on the job. That, in turn,

IN SUMMER 2011, a rural Illinois man named Wayne Sabaj was in his backyard picking broccoli, when something caught his eye. Half buried in the dirt, he found a sealed nylon bag. Inside was $150,000 in cash. For Sabaj, who was unemployed and had, in his words, “spent my last $10 on cigarettes,” this was a godsend.
Though it remains a mystery who had buried this particular stash of money, these sorts of finds are not uncommon.

IN MY WORK AS a financial planner, there’s one topic that always seems to raise an eyebrow: Social Security. When people see projections of future retirement benefits, they often respond with skepticism. My sense is that media reports, questioning the system’s solvency, have led people to discount the value of Social Security benefits—or disregard them entirely.
In my view, this is a mistake. While no one can guarantee what Social Security will look like in the future,

MY FRIEND ROSTISLAV, who would know, tells me that in Russian there’s no equivalent for the word “privacy.” That’s because privacy—as we understand it—is a foreign concept. Children’s grades are posted publicly in schools and it isn’t considered impolite to ask someone’s salary.
Why is this relevant? As a stock market investor, if you have international exposure, you’ll want to be aware of these cultural differences, because they impact how other countries run their economies and how they regulate—or don’t regulate—their investment markets.

PERHAPS YOU’VE HEARD the story of Ronald Read. A lifelong resident of Brattleboro, Vermont, Read was a quiet man. He preferred flannel shirts and spent much of his career as an attendant at a local gas station. Yet, when he died in 2014, even his closest friends were surprised to learn that Read had accumulated a fortune of more than $8 million.
Stories like this appear with some regularity. In 2010, Grace Groner, who was an administrative assistant in Lake Forest,

THE FEDERAL government recently issued its monthly inflation report. The resulting headlines could have put you to sleep: “Consumer Price Index Rises 0.2% in April.” It would have been easy to skip over this seemingly insignificant story for two reasons: First, the way the government reports inflation data, focusing on the monthly increase, isn’t terribly meaningful. Second, even if you looked at the annual rate, which is 2.5%, inflation just doesn’t seem like much of a concern.

EVERYBODY WANTS easy answers. But often, things aren’t so simple, especially when it comes to financial conundrums. Consider the four common money questions below—and the rules of thumb that folks frequently rely on.
1. How much do I need saved for retirement? Type this question into Google and most of the answers will recommend that you save some multiple of your income. Some suggest eight-to-10 times income, while others recommend as much as 25 times.

WHEN ASKED WHY HE robbed banks, Willie Sutton replied, “because that’s where the money is.”
Similarly, private investment funds—such as hedge funds and private equity funds—are attractive to high net worth investors, because they carry the potential for outsized returns. That, supposedly, is where the big money is. Several factors explain this potential. Among them: These funds not only use leverage to increase the size of their investment bets, but also they may buy investments that aren’t publicly traded—and hence they could receive higher returns because these investments are mispriced or as an inducement to accept their illiquidity.

SHOULD YOU INVEST in the stock market? The answer seems obvious: Over the past 90 years, stocks have returned an average 10% a year, far outpacing bonds at 5% and cash investments at less than 3%.
So why ask the question? The reason is the word “average.” Stock market returns are, of course, uneven from year to year and uneven from stock to stock. That’s well known. But the degree to which stock performance varies from stock to stock may surprise you—and that has implications for how you invest.

I REMEMBER SPEAKING with an industry colleague about a company that had been in the news. He told me that he liked the company’s stock and, in fact, had bought it for the mutual fund he managed. Then he added, parenthetically, “I owned it, then I sold it, then I bought it back.”
This discussion highlights a fundamental challenge for investors: Mutual fund managers face incentives that often diverge from their clients. Specifically, fund managers are graded and compensated for their performance before taxes.

ERIC SCHMIDT SAID this when he was Google’s chief executive: “If you have something that you don’t want anyone to know, maybe you shouldn’t be doing it in the first place.”
In his Congressional testimony last week, Facebook chief executive Mark Zuckerberg didn’t say anything nearly as condescending or abrasive. But his testimony was a good reminder that we’re in a very different world privacy-wise than we were even 10 years ago,