When Thomas Edison patented the incandescent light bulb in 1880, it wasn't a marvel because of its complexity. Quite the opposite...
Edison's design consisted of a carbon filament, a glass globe, and a few wires – that's it.
Turning that simple object into something affordable for everyday use was another matter entirely.
You see, early light bulbs were made largely by hand. Skilled workers shaped glass, attached filaments, and assembled components step by step. The entire production process was a series of bottlenecks. Output was slow, costs were high, and quality was inconsistent.
Then, over the following decades, manufacturers replaced slow, handcrafted production with continuous, high-speed machines.
Instead of workers forming bulbs one at a time, molten glass flowed from massive tanks through synchronized systems that shaped, sealed, and moved bulbs along without interruption. Light bulbs became more uniform. Production grew exponentially – and so did investment in this new technology.
The first handmade bulbs were made at a rate of about 165 per day. By the 1980s, machines could make 120,000 bulbs per hour.
The cost of light fell by more than 98%.
Nothing magical happened. Engineers didn't "discover" light again.
They simply got rid of unnecessary steps, idle time, excess labor, and unreliable outcomes until production became more efficient. They found they could do more... with less.
Brian Potter explores this concept beautifully in his book The Origins of Efficiency. (It's a great read, especially if you want to know a lot more about light bulbs.)
His point is that progress often looks less like innovation and more like refinement – the quiet, cumulative work of making a system run better.
Investors tend to overlook the value in businesses that run efficiently.
Markets love big stories, new products, and exploding growth. But constant improvement is what builds untold riches.
That's because when a business gets even just a little better, it increases production, widens margins, and reduces capital requirements.
And the companies that do those things consistently are the exact ones that deliver stable returns over time.
The challenge is to find them... and to buy in at a fair price.
When it comes to finding great companies at good values, few analysts do a better job than my friend and founder of our corporate affiliate Chaikin Analytics, Marc Chaikin...
Marc got his start as an analyst on Wall Street more than 50 years ago. He created proprietary stock indicators – like the industry-standard "Chaikin Money Flow" – used by the biggest firms and traders all over the world.
Today, Marc is warning about a swift and potentially unforgiving market move starting in late February. He says it could draw a sharp line between the true long-term winners... and stocks that have been running on hype alone.
But this isn't a sign to get out of the market. Instead, Marc is urging investors to look at companies in emerging sectors with strong earnings quality. And he has a way to help you find these opportunities...
He believes this strategy could unlock multiple chances to double your money in 2026, while helping avoid the kind of losses that often follow major market turning points.
Marc is sharing all the details – including the names of two stocks you should buy today and two you'll want to sell – next Tuesday, February 17.
Reserve your spot for this urgent new briefing here.
Now, let's get to this week's Q&A... And as always, keep sending your comments, questions, and topic suggestions to feedback@healthandwealthbulletin.com. My team and I read every e-mail.
The Benefit of Bond Funds
Q: Do you recommend individual bonds or buying bond funds? – E.P.
A: Thanks for your question, E.P.
As we've written before, adding safe, fixed-income investments – like bonds – to your portfolio can help you sleep well at night. It's a simple way of stabilizing your investment returns and building wealth over time without worry.
When we talk generally about bonds, we mean all types... those issued by the U.S. Treasury, municipal governments, and corporations alike. And that could be in the form of individual bonds or bond funds.
I do like investing in bond-focused funds – like municipal-bond funds, closed-end funds, or exchange-traded funds. With these investments, we're pooling our money with other investors and minimizing the risk from any one or two bad investments.
Since each fund holds dozens of individual bonds, we're instantly diversified. If one bond defaults, we have the safety of the others to keep our value and income relatively constant. That's especially important as volatility and inflation are running rampant today.
With that said, interest rates are getting lower right now. That means if you're buying into a bond fund that gives you exposure to long-dated bonds (maturities of five, 10, even 20 years), your returns will likely suffer.
That's why I recommended you reconsider your positions in long-dated individual bonds and bond funds for the time being.
There are plenty of short-dated bonds and bond funds you can add to your portfolio to guarantee safe returns and help protect your wealth in any market environment.
What We're Reading (and Watching)...
- Did you miss it? Popular investments are plunging, but I'm not worried.
- Something different: Inside the risks of investing in art (video).
Here's to our health, wealth, and a great retirement,
Dr. David Eifrig and the Health & Wealth Bulletin Research Team
February 13, 2026
P.S. Our offices are closed next Monday for Presidents Day. Expect your next Health & Wealth Bulletin issue on Tuesday, February 17.