Socks1000

Chosen answer: Yes, he developed a way to test for Cylons. He even figured out Boomer was a Cylon, so we know it works. But in a later episode, he specifically tells Head 6 that he hasn't been doing the testing that he claims to have done because he actually prefers not to know, because it only breeds paranoia and fear. His opinion of Cylons is, after all, not typical.

Garlonuss ★

Chosen answer: (Extreme spoilers here.) They hear it because they're either Cylons or their destiny has been influenced by the Cylons. The notes are the coordinates to Earth.

Captain Defenestrator

Chosen answer: "I think, therefore, I am" - Descartes Both Six and the Armistice Officer are alive. What she is doing is pointing out the central theme of the show. Humans don't believe that the "toasters" are alive. But when asked to prove that they are alive, humans are as powerless to do so as the Cylons. This is because it is inherently unprovable. The show is pointing this out right from the very beginning. What is life? Who is alive? How can we possibly know? and most importantly, what gives us the right to decide who and what is alive?

Chosen answer: Her motives are never explained. One possibility would be curiosity, a simple experiment in human infant physiology. Another, perhaps more likely one from her subsequent look of apparent distress is that it was, in an odd way, an act of mercy, giving an innocent baby a swift death, rather than leaving it to die in the nuclear fire or of radiation poisoning afterwards.

Tailkinker ★

Chosen answer: Well, that's one of the big questions of the show and it's answered in the final episodes. She's, to use Baltar's term, an "angel". Beings who appear in the form of loved ones to help and guide us. Most of the time, they only appear in the head of one person, but the final season had one angel that everyone could see and interact with.

Garlonuss ★