I always thought sentien meant living create which is aware of its own interactions with the world. Sapient is a living being using a set of organised logic?
EDIT: suppose thats roughly correct though Mass Effect i think discusses the issue the way it does so as to not put too much of this stuff over the audience's head.
EDIT: suppose thats roughly correct though Mass Effect i think discusses the issue the way it does so as to not put too much of this stuff over the audience's head.