You can change the world with something only marginally better in markets that are less competitive and less well-established than general internet search... unfortunately cuil chose search.<p>Facebook is a marginally better mousetrap, Wordpress and Movable Type are marginally better mousetraps...They just happened to enter markets where the other options were not the greatest.<p>Marginally better can also be accomplished by simply removing a feature or two... 37signals, Twitter
Yes you do. Think about it. Was the object we know as "The mouse trap" the first tool used to kill mice? I doubt it. It simply was better than the current solutions. Sure, I know that being 'marginally better' isn't going to guarantee success, especially in a competitive market, but slight improvements can lead to widespread successes.