Meh. The transistor was just an evolution of the vacuum tube. Sure, a $3.00 pocket calculator can outperform ENIAC, but the transistor was just a miniaturization of the tubes, allowing mass-market penetration of computing technology. Irrigation, while it may seem simple, was a quantum leap in the development of humankind: It allowed for the large-scale production of food. People were drawn together to the fertile regions that were conducive to crop production. Rather than being spread out, populations were more concentrated. Cultures were established because people did not have to worry as much about merely surviving and had time to invent and create. Linguistic and written traditions began when people had the need to communicate with more than their immediate families. The most fundamental aspects of civilization came from the development of agrarian societies which was enabled by irrigation.