 One type of case that is often said to violate the Common Cause Principle involves entangled states in quantum mechanics, such as those found in Einstein-Podolski-Rosen (EPR) thought experiment. We will discuss this case in detail in  Section 10  below. The present section will consider several other examples. As we shall see, these examples typically raise questions about the proper scope and interpretation of the Common Cause Principle, rather than refuting the principle outright.