"Changed the world" could have a variety of meanings. Taken literally, it could mean "altered or affected the world in any amount." Going with such a strict def

"Changed the world" could have a variety of meanings. Taken literally, it could mean "altered or affected the world in any amount." Going with such a strict definition, nearly everything changes the world. The other extreme, the one people frequently have in mind, is "to change or alter many parts of the world very directly", such as the invention of flight. However, a better phrase for the feeling in developer circles I think would be "touched the world." Doing so, with the internet, is easy. Like building a public bench in a city park, many people may gain small enjoyment from it, and as the one who built it, all that small joy brings you lots of excitement.