No you are right. It's going to be a 0.1 sigma change. It's one of the reasons why most plans to disrupt teaching were going to fail eventually. What you descr

No you are right. It's going to be a 0.1 sigma change. It's one of the reasons why most plans to disrupt teaching were going to fail eventually. What you described is the inherent road block in education/learning. It's as dependent on the state of the student as it is on the ability of the teacher.