Google saw itself as the Alpha search engine, and had no doubt it was the best for you and your search results. As people would Google different topics, they would be given the option to either search for it, or click the I'm Feeling Lucky button and take a chance on a random website. People and critics alike believed that this option gave Google an edge and gave the website some personality, something that no other search engine had. This pushed Google ahead of the game and created an even wider gap between Google and the rest of the search engines around the web, proving that it was indeed the Alpha engine. Google was so sure in its ability to provide you with the information that you would want, that this button was created. The people at Google were so sure in themselves, that this button was to change the way you search, creating the ability to search not only faster, but more efficient.
For a while, people thought that the science behind the ability for the I'm Feeling Lucky button was so complex because no one knew how the button was so spot on when it came to giving you what you wanted. The science is really quite simple and not complex whatsoever. Google created the button so that when you enter a seaerch term and click this button, the search engine would take you directly to the very first page that would have come up on the search results, had you clicked the other button. This led you to a page that was not only relevant, but the most related page on the Google search query.
Google still has the I'm Feeling Lucky button incorporated into their search engine, however they have made a couple tweaks to this wonderful button. This button is no longer just a button to take you to the first result on the search queue, it leads you to games, doodles, trends, resturants, and much more. When you scroll over this button, while Google instant is turned on, it will begin to spin and land on a certain option for you to click on.