Abstraction is an interesting notion. The word itself is derived from the Latin preposition ‘ab’ meaning ‘from’ or ‘away from’ combined with the verb ‘trahere’ ‘to pull or draw’ (which also gives us our word ‘tractor’) - thus it means, literally, ‘to pull or drag away from’ so that it conveys the sense of separation, … Continue reading Why is a raven like a writing desk? The power of abstraction.