Forced perspective is a technique that employs optical illusion to make an object appear farther away, closer, larger or smaller than it actually is. It is used primarily in photography, filmmaking and architecture. It manipulates human visual perception through the use of scaled objects and the correlation between them and the vantage point of the spectator or camera.
Sometimes good positioning is just a question of changing your perspective. The new iPad2 has an HDMI adapter to show your screen on a TV. Jobs says, "You see exactly the same thing!" But actually, it's just mirroring. My reaction was, "Oh, that's bad. I wanted separate displays." But Jobs' excitement convinces us that this is a feature, not a weakness.
Whose perspectives do you need to change? Your sales team's? Your customers'? Yours?