Professor Gehry, an expert in observing the Leaning Tower of Pisa, has predicted that the tower will fall in 250 years because its center of gravity has exceeded the outer edge of the tower's base, based on the rate at which it has been tilting in recent years. However, the Leaning Tower of Pisa Service of the Ministry of Public ****services countered Prof. Gehry's opinion by arguing that mathematical projections alone are unreliable, and that the Leaning Tower of Pisa is "a comprehensive problem intertwined with a variety of facts". Some other researchers found that the Leaning Tower of Pisa tower was once tilted to the east, and then turned to the south tilt, they also believe that the tower in the past few hundred years in the slanting and not fall, 250 years after the fall and not fall, I'm afraid that can not be confined to simple assumptions and predictions.