Mother of Necessity

"Necessity is the mother of invention" I think this phrase means that people can invent things what we need in life. Firstly, it would be difficult to live without computers. For example, we connect (contact) each other through e-mail; however, if there weren't computers we had to write letters which will take a long time. We could live easier because of Charles Garbadge who was the first inventor of computers. Secondly, planes. When we go to other countries, we need planes, invented by the Wright Brothers. Now we could go to other countries easily and safely. Thirdly, Thomas Edison who invented the light bulbs. If there was no light, we could have to use candles. (Oh no!)