Very well said. The only thing that makes gas planning difficult for ow students is not giving them the time to learn and grasp the concept. With a 6-8 week course it's easy. With a weekend or two it's damn hard. To teach it and for them to understand it. It's also difficult to teach it when you have already made the assumption that they are not able to learn it because it's too much info. I've taught students from age 12 to mature adults. They all did not grasp it in the same amount of time or in the same manner, but they did all get it. The key was putting it in terms they can relate to and understand. Gas in a car is a good analogy. Nearly everyone understands that.