Invention

Q: In your opinion, what has been the best invention in your lifetime? Why?

I think 'Cell Phone' is best invention in my life. Before a cell phone was invented, people could communicate by using a public telephone, a beeper, or a home phone. Sometimes it was uncomfortable when emergency situations happened. After a cell phone was invented, people can communicate everywhere and whenever. Now a cell phone functions as more than a phone. For example, it can check stocks, today's fortune, take a picture, play a game, play a music, use a GPS, watch TV, research the Internet, and so on. Also, cell phone is being made smaller, so people can carry it easily. Therefore, cell phone is the best invention in my life.