I posted this on Enworld, but thought I'd re-post it here for feedback
At 1st level a wizard determines 4 spells that he knows, representing years of study and practice.
You have a 0-level character that goes on an adventure. Great, they survive and become a 1st level Wizard. Is the gap between 0 level and the first adventure suppose to be years? Did that farmer study magic with his hen (or randomly determined farm animals) for years before going on his 0 level adventure? Perhaps the farmer's hen is his patron!
Of course, this is nothing that a clever Judge couldn't resolve. Perhaps the character's patron allowed them to study in some extraplaner space where time doesn't move at the same rate. The wizard could come back years older then his other 0 level adventurerers.