When entrepreneurs used his invention to play music, Edison thought it was a debasement of his idea. Our widespread misunderstanding of inventors as setting out to solve society's problems causes us to say that necessity is the mother of invention. Actually, invention is the mother of necessity, by creating needs that we never felt before. (Be honest: did you really feel a need for your Walkman CD player long before it existed?) Far from welcoming solutions to our supposed needs, society's entrenched interests commonly resist inventions.
Medium-size dogs are at the midway point between tiny and massive canines, and both height and weight factor into the classification. Medium-size dogs generally weigh in the ballpark of 35 to 65 pounds, according to Kim Williamson of Animal Planet.. In terms of height, medium-size dogs are usually from 1 to 2 feet tall, measured from the ground to the withers or shoulder.
Medium breeds weighing up to 80 pounds as adults, will typically reach their full size between 12 and 16 months of age, while large and giant breeds weighing over 80 pounds, may reach their adult size between 18 months and 2 years old.n fact, some larger breeds may not be fully grown until around 2 years of age. This is important to know since pups need special nutrition until they are fully mature, in order to grow properly and become healthy adults.