Adam M. Grossman

WHEN THOMAS EDISON was a child, he apparently set fire to a barn on the family’s property. After it burned to the ground, his parents were furious.
“Why would you do such a thing?” his father asked.
Young Edison replied, “I wanted to see what would happen.”
The story may be apocryphal, but I was reminded of it recently when I came across a study titled “Not Learning from Others.” A group of economists wanted to understand more about how people learn.

WITH DECEMBER FAST approaching, it’s a good time to think about end-of-the-year financial planning. What steps might you take?
A popular strategy is to make charitable gifts, both to support good causes and reap a tax benefit. But before you start writing checks, take a moment to better understand your tax picture. Because of the complexity of tax forms, that’s often easier said than done. Still, you don’t need to decipher every number. Instead,

STEIN’S LAW STATES that, “If something cannot go on forever, it will stop.” It’s named for Herbert Stein, an economist who was influential in the 1970s and served as chair of the president’s Council of Economic Advisors.
Stein first made this comment when he saw government debt growing to what he felt was an unsustainable level. While half-joking in the way he put it, Stein was making a serious observation: Trends rarely last forever.

A KEY CONUNDRUM FOR investors: On the one hand, the data on tactical trading are clear. Frequent portfolio shifts are a bad idea and can damage returns. On the other hand, we shouldn’t be so wedded to the status quo that we’re unwilling to ever make a change.
With this conundrum in mind, it was notable when investor and author Howard Marks declared a “sea change” in the investment landscape and recommended that investors revamp their portfolios.

DO YOU EXPECT IT TO be warmer this winter in Minneapolis or in Miami? This isn’t meant to be a trick question. We’d probably all agree that it’ll be warmer in Miami. But what if I asked you to predict the precise temperature in either city on Jan. 1. This is a much more difficult question.
In his book Mastering the Market Cycle, investor Howard Marks uses illustrations like this to make an important point.

AN IRONY OF PERSONAL finance is that retirement can take work. More than once I’ve heard a retiree express this sentiment: “Working was easy. Retirement is complicated.”
There is, I think, a lot of truth to this. When retirement appears on the horizon, numerous questions enter the picture. There are, of course, financial concerns: “How much will I need? Do I have enough? How should I invest my savings?” These questions are important, but they aren’t the only ones.

WHAT’S THE FIRST RULE of personal finance? To answer this question, let’s look at the financial lives of two notable individuals, starting with musician MC Hammer.
When Hammer gained fame in the 1980s, he made millions. But unfortunately, his spending quickly outpaced his income. Hammer bought 19 racehorses, employed a personal staff of 200 and built a $30 million house with a 17-car garage. The result, sadly, was bankruptcy.
If MC Hammer represents one extreme of financial management,

AS THE SAYING GOES, a picture is worth a thousand words. Over the years, I’ve found certain images and illustrations to be immensely helpful in discussing investment concepts. These are the ones I’ve relied on the most:
Only in Australia. A key challenge for investors—if not the key challenge—is that none of us has a crystal ball. It’s impossible to know what markets will do next month or next year.

BACK IN THE 1980s, Michael Milken earned notoriety as “the junk bond king.” With his swagger—and his toupee—Milken was an outsized personality in a normally staid industry. But that was four decades ago. It may have been the last time that bonds were truly interesting.
On most days, bonds are about as dull a topic in finance as you can find. But here’s the challenge for investors: While bonds might be boring, they’re important—and they can be tricky.

I OUTLINED 10 REASONS everybody should have an estate plan in a 2018 article—and what was true then remains true today, especially for those whose assets could be subject to estate taxes.
Under today’s rules, the federal estate tax applies to individuals with assets over $12.9 million. That might sound like a high number. But in 2026, the limit is set to be cut in half. In addition, many states impose their own estate tax,

“YOUR CHECKING ACCOUNT balance is low.” It’s an alert none of us wants to receive, especially if we’ve just been paid. But that was the message that a friend—let’s call him Ron—got recently. A hacker had gained control of his account and started bleeding it dry.
Ron, it turns out, was lucky to have received that alert. Another friend—let’s call him Arthur—received no such alert when his account was also taken over by hackers this summer.

THE CENTRAL Intelligence Agency knows a thing or two about gathering information. That’s why a CIA publication titled The Psychology of Intelligence Analysis is, in my opinion, a valuable resource for investors.
Of particular note is a section titled, “Do You Really Need More Information?” It offers this counterintuitive finding: To make sound judgments, some amount of information is necessary. But beyond a certain point, gathering more data doesn’t always lead to better decisions.

SOMEONE ASKED ME this week if he should own pork bellies in his portfolio. While he was kidding, this does get at a real question: Should you own commodities like cattle futures, gold, oil, lumber, soybeans and more?
Those who favor investing in commodities typically cite two benefits. First, commodities are seen as a bulwark against inflation. This is obviously a timely concern. Second, because commodities don’t move in lockstep with stocks or bonds,

NO QUESTION, MANAGING an investment portfolio is tricky. On the one hand, you want stock market exposure to help drive your portfolio’s performance. But on the other, it’s agonizing when the market drops 30% or 50%—or more—as it’s done on several occasions.
How can investors strike the right balance? Like most things in personal finance, there isn’t one right answer. In general, investors can choose one of five approaches when building a portfolio.
1.

IN THE WORLD OF personal finance, there’s no shortage of formulas and frameworks for making financial decisions. But it’s also important, I think, to see these as guidelines rather than as rules. Consider the textbook view of money and happiness.
What the research says is that, all else being equal, we should opt to spend money on experiences rather than things. Let’s say the choice is between spending $1,000 on a new watch or on a weekend away.