I just noticed the requirements for the following 3 Answer Badges:
Explainer: Edit and answer 1 question (both actions within 12 hours, answer score > 0) 67 awarded
Refiner: Edit and answer 50 questions (both actions within 12 hours, answer score > 0) 2 awarded
Illuminator: Edit and answer 500 questions (both actions within 12 hours, answer score > 0)
From "Edit and answer 1 question ..." to "Edit and answer 50 questions ..." and then 500 questions, all within 12 hours, seems to be very big quantum leaps. To edit and answer 500 questions, both actions within 12 hours, one would have to edit and answer about 42 questions per hour on average. Keeping that pace for just one hour would tax the most experienced members of this group, but maintaining it for 12 hours? Seems to be a very unrealistic goal.
Were the numbers intended to be 1, 5 & 50? Those seem more sensible.