Which two factors most strongly influence Macbeth's descent into moral corruption?

I would say that Lady Macbeth's counsel and ambition were two factors which most strongly influenced Macbeth's descent into moral corruption.

Explanation:

Lady Macbeth's counsel

Ambition

Explanation:

I got it right on my test.

in the story "marionettes inc," in the last line of the story, braling two is referred to by the narrator as the "someone." what does this new identifier imply and how does it add to the drama of the closing scene?