Don't believe in schedules. Planners make up schedules. Frightened coders strive to meet schedules. Real programmers ignore schedules. Like vending machine popcorn.
Coders pop it in the microwave oven.
Real programmers use the heat given off by the cpu. Don't bring brown bag lunches to work. If the vending machine sells it, they eat it. Vending machines don't sell quiche. Don't eat quiche.