In comparison to jogging, roller blading is gentler to ankles, knees and hips. My primary recreational activity is running. In the 27 years I've been running, the improvements in running shoes have been amazing, and I'm sure have helped to minimize injuries and prolong my running career. Recreation is not the only industry that offers consumers an increasing selection of products. Practically everywhere you look in the economy, consumers have more to choose from.
Automobiles now come in a wide variety of body types.
Cable TV offers 40 or more channels, and satellite TV more than 150. The ever-increasing array of speciality catalogs provide people with access to virtually any product category imaginable. There are dozens of kinds of beer to choose from. It's been observed that one effect of this increasing variety is that it allows each of us to raise our standards. Producers are forced to try harder in satisfying consumers and in competing for their dollars.