NETAS and babus come and go in North Block, but the rhesus monkeys remain forever. When the evening sun disappears behind Rashtrapati Bhavan, these vicious simians relocate from the trees and lawns of Raisina Hill, and from dusk to dawn lay permanent claim to the corridors for power. Viewed in this context, there is little to be excited about the transfer of two of the buildings long-lasting human inhabitants revenue secretary Nand Kishore Singh and his boss, finance secretary Montek Singh Ahluwalia. They came and went.