Learning Something

When you do something, when you learn something, going to school, watching TV, applying the skill that you have learnt. Then making money out of it. Spending it on items of interest. Saving money. Then learning more skills. Working hard. Then thinking about working only for making money. That's all economics, business, skills, competition, etc. Such things are all covered under Sir Ke Log.
All that you call real, then something elusive, or not having something.