my teacher was assigned (i think, at least that was how it was portrayed)... being born into a christian culture, i was first brought before christ, who then said 'give him to (couldnt hear the name) to teach him... so in my case the answer was yes and no... christ oversaw the culture and my teacher (who has all the abilities of the gods (insert deity) and more) was assigned by him to teach me the nature of reality... it was more an accident (so to speak) of birth than anything (although i always had a fondness towards him as agnostic)... if i had been born into another culture i would probably have had a different guardian (supposition on observation)... at least that was how it was portrayed, there may have been other reasons for that unknown to me... but we all have someone...