No, they are not supposed to get things right. They are supposed to evaluate scientific theories by checking testable predictions to find out if the theory is

No, they are not supposed to get things right. They are supposed to evaluate scientific theories by checking testable predictions to find out if the theory is the correct explanation about how things work in our universe. Which means that scientists try to proof themselves wrong most of the time. A prediction is also often multidimensional and can be accurate about what will happen, while being off about when it will happen. This article https://en.m.wikipedia.org/wiki/Prediction https://en.m.wikipedia.org/wiki/Prediction uses the solar cycle as an example of that under the Science category.