Mod limiters on capturing alien Tech

[Suicide Junkie]

Take tech areas A,B and C. X and Y are integers of your choice. R is a race with the racial tech, S is a race without.

A is a racial tech
B is not.
C is not.

B requires tech level X in A before being researchable.
C requires tech level Y in B before being researchable.

The results?
- Race S cannot research any of the techs at first.
- Race S cannot steal tech levels in A
- Only race R can research A to level X, and then research B.
- Race S can steal tech levels in B from race R.
- Race S cannot research tech area B ever
- Race S can steal tech levels in C from race R.
- After stealing level Y in tech B, race S can research levels in tech C.