What would explain differences in shapes or slopes of two sets of indifference curves or two indifference maps?

1. What would explain differences in shapes or slopes of two sets of indifference curves or two indifference maps?
2. Can you find an analogy between measurement of temperature and measurement of pleasure?
3. Do you believe that you and your mother are two separate individuals? Yes and/or No? And Why?
4. Do you think that goods are substitutable? Yes or No or to what extent?
5. Is fungibility of money obvious?
6. Choose to answer one between the following two:
6a: How rational were you about choosing Yonsei? Were all costs and benefits really considered? Or what other factors were involved or entangled?
6b: Can you find any difference between a BLT and a bowl of tomato soup (preferably, its Korean version, Gook or Chige) in terms of independence (or interdependence) of its ingredients?