Okay, so would you care elaborate on what residential property produces.
Regarding the element of gold, well this stuffs means different things to different people. Yes, it does not produce anything, although in some cultures it will produce a very nice bride (four in some cultures)
It's also a store of value, a status symbol, lasts longer than all other conductors, it's money, has high aesthetic value and will buy you a ticket out of a trouble spot.
