Predictive text is what Google uses to guess what you're going to search for, often starting from the time you type in the very first letter. An "F" may give you the auto-fill option for Facebook, for instance, while a "W" may offer suggestions like "weather" or "Wal-Mart." Google is in a unique position in understanding inherently what people search for the most often, so it can accurately predict what you may be looking for even before you search. This just adds another layer to the process of guiding searches and helping users find the specific information they're looking for, which has always been Google's main goal. The company wants to make sure that every search provides relevant and helpful results, and predicting what users are going to seek out allows for increased accuracy.