Exactly, and the bag of chips is at least 1,000 calories. Up to 2,500 calories if we're talking about those generic ripple chips. The lettuce is 50-100 calories. If you're getting most of your daily calories from the likes of lettuce, spinach, tomatoes, cucumbers, peppers, zucchini, broccoli, etc., you can eat steadily all day and still have a hard time hitting 2,000 due to the sheer bulk. But it's gonna cost.