Google Instant Predictive search technology delivers faster search results to users as results are shown on the fly while the user types in his keywords. Results are recomputed based on the keystrokes and search results keeps changing as you go. This helps users to get better and faster results as they type what they want to search.
Google Instant is a preferred search solution by smart phone users, as it displays search results with minimal key strokes.
For some users (including myself) this feature at times seems to be very annoying. Since we get results showing on the fly, i keep cutting short my entire keyword phrase and move along with any result i see on the way, and forget my initial search itself. However, Google provides a switch to toggle this setting. On the top right hand side of the search window we will find ‘Search settings’. On this page, we can set Google Instant On/Off.
Google is yet to comment on the additional energy use and carbon footprint that its new predictive search technology brings in!!