We shoul take Delhi before we research Steel. That means that Delhi is no later for NE than Engineering.
Engineering can build NE now. Not sure what steel has to do with it. I'd rather not magnify one of our polluted gene pools. Engineering will be the purest and we could always use an extra GE or an accidental GA. Without the NE, Engineering will produce only 1 more GE before the end of the game (after the GP due in a couple turns...which may not be a GE...
