Your criticism of PG's metaphor applies to all metaphors.
Absolutely. If you want people to take you literally, don't use metaphors.
If, however, you want people to think about what you're saying and draw inferences... well, go ahead and use metaphors, but be prepared to deal with people misunderstanding what you intended to say (and have someone read over what you've written to look for anything which could be particularly badly misinterpreted).
Absolutely. If you want people to take you literally, don't use metaphors.
If, however, you want people to think about what you're saying and draw inferences... well, go ahead and use metaphors, but be prepared to deal with people misunderstanding what you intended to say (and have someone read over what you've written to look for anything which could be particularly badly misinterpreted).