Comparing slaves to land and to movable objects - unpleasant comparisons, but useful in trying to understand whether one can steal another's slave. Plus, what happens if one squats in a courtyard of a friend from whom he has borrowed money? It smacks of ribit/interest. Also, more cases about changing money with regime change. Will paying back a loan be based on the coinage or the value of it at the time of the loan? Plus, you can't desacralize ma'aser sheni money