Post date: May 4, 2016 2:54:14 PM
I think the best invention would be smart phones. Smart phones can download apps so you have everything you need on the go. They have ways of communication, games, camera , entertainment and basics such as a calculator and clock. They are great to carry around in your pocket or purse since they have a thing and light design and they have touch screens which save spaces that buttons may take up. Therefore I think Smart phones are the best and one of the most convenient invention.