What is the birdcage effect? As the name suggests, it means that if you place a birdcage in one location, as more people pass by and see it repeatedly, eventually someone will put a bird inside it. So as long as you place a birdcage on your balcony, sooner or later, you will have a bird in it. If you place a dog cage somewhere, sooner or later, you will have a dog in it. If you place a flower pot somewhere, sooner or later, you will be growing flowers. Many times, people really do things just to feel a little jealousy, to make a meal of dumplings, or to match a hat with an outfit. Initially, you might have wanted to buy a Yadi, but end up bringing home an Audi. So sometimes what truly drives a person's desires may not be a very specific thing. You might fall for someone of the opposite sex, possibly because many years ago, you saw a figure at a street corner, which planted the seeds of that attraction.