What's old is new again! Here's how to use the 100-year rule to find the perfect baby name and predict the next big trend.

There’s a school of thought on Wall Street that retirees should follow the so-called 100-minus-your-age rule when building a properly balanced post-career investment portfolio. Also known as the ...

Using the ‘100-Year Rule’ for baby names, parents today can look back at the most popular names in the 1920s. The ‘100-Year Rule’ for baby names theorizes that popular names have a three ...

And what's the secret to creating demand around your product? He says that savvy retailers will use "the rule of 100" to price their products. The idea is that a $20 shirt is more appealing at 25 ...

Though heuristics help simplify complex financial decisions, mental shortcuts like the ‘100-minus-age’ rule for equity allocation are useful but not foolproof. When it comes to money ...

The 100-minus-your-age rule helps retirees balance stocks and bonds to manage investment risk. Critics argue the rule is outdated as retirees live longer and have diverse income sources.