> Sell the land under your 90-story building to an offshore trust in the Caymans for $1, now you have a firm data point that the land is worth exactly 1 dollar.

> Sell the land under your 90-story building to an offshore trust in the Caymans for $1, now you have a firm data point that the land is worth exactly 1 dollar. What's the taxation authority going to do with that? "You say your central NYC land is worth $1? Unfortunately we have to acquire it under eminent domain, but we'll pay you 1000x the value, a whole $1000!"