 of which no subformula, or even a contiguous segment, can be identified as the analysis of ‘The F’. Similarly, talk about “the average family” as in “The average family has 2.2 children” becomes “The number of children in families divided by the number of families = 2.2”. There is no segment of that formula that corresponds to “the average family”. Instead we are given a procedure for eliminating such expressions from contexts in which they occur, hence this is another example of an “incomplete symbol” and the definition of an average is an example of a “contextual definition.” 