i believe this song's about abortion specifically, and the evolution[s] of science generally.
The speaker was involved in an abortion procedure, and now feals great guilt.
perhaps at the beginning he [an his partner?] haven't realized what they have done, feeling no remorse.
By the end of the song, they feel pain in realizing their choice, and part of this is blamed on the evolution of science, providing options to kill with no remorse.
i believe this song's about abortion specifically, and the evolution[s] of science generally. The speaker was involved in an abortion procedure, and now feals great guilt. perhaps at the beginning he [an his partner?] haven't realized what they have done, feeling no remorse. By the end of the song, they feel pain in realizing their choice, and part of this is blamed on the evolution of science, providing options to kill with no remorse.