unique or racial technologies

Neutral races do not expand beyond their home system, since their ships are physically prevented from traveling through WPs. You cannot manually create a neutral race, however. All empires manually created will be full-blown empires.

To make AI races select a new trait, you have to edit the empire setup script for each such race. The script source files are in utilities\script parser.

To remove an component for those with trait A, simply add a NOT racial requirement to it. Lets say you are adding an "Organic Brain", which will replace the "Ship Bridge." The racial requirement for Organic Brain is easy, and I gather you get how to do it already. To make the "Ship Bridge" unavailable to those with the Organic trait, simply make the requirements say:

Number Of Requirements                          := 2
Requirements Evaluation Availability            := AND
Requirements Evaluation Allows Placement        := TRUE
Requirements Evaluation Allows Usage            := TRUE
Requirement 1 Description                       := Empire must have at least tech level 1 in Light Hull Construction.
Requirement 1 Formula                           := Get_Empire_Tech_Level("Light Hull Construction") >= (1 + ([%Level%] - 1))
Requirement 2 Description                       := Empire must not have racial trait Organic Manipulation. 
Requirement 2 Formula                           := NOT(Empire_Has_Racial_Trait("Organic Manipulation"))

If you don't want regular empires to have the extra description tag for the requirements list, you can simply remove the value of the Requirement 2 Desc. field, like so:

Requirement 2 Description                       :=
Requirement 2 Formula                           := NOT(Empire_Has_Racial_Trait("Organic Manipulation"))

NOTE: I make no guarantees as to how SE5's parser will handle the spacing, but the logic itself is correct.

SpaceEmpires.net | Space Empires Wiki

Try adding a space after NOT... or play with capitalization. It is definitely an accepted unary operator.

SpaceEmpires.net | Space Empires Wiki

thanks this has helped with many objects i needed to work