The article looked at how businesses grow based on their size and age in the U.S. manufacturing sector. They used info from over 20,000 firms between 1976-1982. The study found that as a company gets older, its growth slows, especially when size remains the same. This supports one idea about how businesses grow. Surprisingly, larger companies tend to grow slower than smaller ones, which challenges a previous idea. The link between growth and size isn't straight, it's more complicated.