For suppose it is false that some individual has the following conjunctive property: he\(x\) is a patient; and he\(x\) saw every young doctor (i.e., every individual\(y\) is such that if she\(y\) is a young doctor, then he\(x\) saw her\(y\)); and he\(x\) is healthy. Then intuitively, and also given the rules of Frege’s logic, it is false that some individual has the following conjunctive property: he\(x\) is a patient; and he\(x\) saw every doctor; and he\(x\) is healthy. This captures the fact