Just ate half a jar of peanut butter. Am now ready for medieval crop rotation.

• In the three field system of medieval crop rotation, legumes and food plants are planted concurrently. Fallow ground is the third rotational period.
  
• Plants need nitrogen to grow properly, and must take it from the soil.
• Legumes are very important, because they add nitrogen to the soil.
• So the three field system was a radical new way to maintain soil quality over long periods.
  
• As I am full of peanuts, I am analagous to a field full of peanut plants.
• Thus, I would be ready for harvest, and crop rotation in the medieval period.

See, it's actually very funny.