At first glance, it would appear that the sheer description
of the item to be analyzed functionally entails few, if any problems.
Presumably, one should describe the item "as fully and as accurately" as
possible. Yet, at second thought, it is evident that this maxim provides
next to no guidance for the observer. Consider the plight of a functionally
oriented neophyte armed only with this dictum as an aid to answering the
question: what am I to observe, what am I to incorporate into my field
notes, and what may I safely omit? (1968, p. 109).