I'm reminded of Neal Stephenson's description of Rhetors and Incantors in 'Anathem' - "Rhetors could change the past and were eager to do so, Incantors could ch

I'm reminded of Neal Stephenson's description of Rhetors and Incantors in 'Anathem' - "Rhetors could change the past and were eager to do so, Incantors could change the future and were very cautious using that ability". Could be a parable about leadership styles.