Tachikoma's screen: Hamlet
The words that flash on the Tachikoma's screen as it takes Miki home are a reference to William Shakespeare's tragedy Hamlet:
"To be, or not to be: that is the question:
Whether 'tis nobler to suffer
The slings and arrows of outrageous fortune
Or to take arms against a sea of troubles,
And by opposing end them?"
In Hamlet's soliloquy from Act III, scene i (lines 58–90), he questions committing suicide. "To be or not to be", rather, "To live or not to live." In the beginning of the soliloquy, Hamlet asks what would happen if he chose to live, which would means to suffer through life, just as everyone does.
Here, the Tachikoma is pondering what it means to actually have a ghost and be alive.