There are many false needs around us, and one of the hottest ones is “Smart” led high bay . The so called smart trend seems wanting to change everything so that a phone can control everything and become a super remote controller of LED Lights . Is it actually a set back?More often the case is, little to none people will sit at home and play with color temperature of the lights.It’s the similar case in LED Lighting , and no one would just sit around and playing with a light bulb.Some needs only exist in demonstration;Some needs only exist in “other countries”.So when we look back at why does Frankfurt publish only the design trends rather than technical trends, it is because design can meet real demand. Only design can express the changes in lifestyle, and lifestyle is the conclusion of relationship between human and light.Doubtful trends shall be avoided, so how do we find the valuable trends?