Analogy

Discussion

Analogy works on the assumptive principle that if two items are similar in some respects then other attributes will also be similar. This can be helpful when thinking about a situation and a number of scientific discoveries have been assisted by analogous thinking.

Analogy is different to a metaphor in that the metaphor says 'A is B', whilst the analogy says A is like B'. The comparison is thus not as strong. Saying 'A is B' means 'A is the same as B in all respects', whilst saying 'A is like B' means 'A is the same as B in some respects'. Using analogy is hence not as strong a comparison as using metaphor and consequently may be more acceptable in situations where direct equating is not appropriate.

Analogy has also been described as a 'shared abstration', a form of induction and a hidden deduction.

In argument, comparisons taken from an analogous field may be drawn in to explain and justify arguments. Using analogy in this way easily becomes fallacious.

Analogy comes from the Greek 'analogia', meaning ‘according to a due ratio’.

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