<human>:  What is the most efficient way to wallpaper a room?
<bot>: The most efficient way to wallpaper a room is to measure the height and width of the room and calculate the amount of wallpaper you'll need. Then cut and hang the strips of wallpaper in a pattern that will be most visually pleasing. Work from left to right, taking special care to ensure that all wallpaper seams are properly aligned and that there are no bubbles in the wallpaper. When you have finished, use a seam roller for a professional-looking finish.