S-shaped Curve

An S-shaped curve, also known as a sigmoid curve, describes how something like technology adoption or population growth progresses over time. Initially, growth is slow as early adopters try it out. Then, it accelerates rapidly as more people adopt it, reaching a peak. Finally, growth slows again as it approaches a maximum limit or saturation point. The shape resembles an "S," reflecting this gradual start, rapid increase, and leveling off. This pattern helps illustrate how new ideas or products often spread through a population in a predictable way.