[The explanation is more than a bit overwhelming, but Eren gets the strangest impression that it's less so than it would be if Flat weren't speaking directly into his head. He also already has a rudimentary understanding of baseball, so he's able to grasp the concept rather easily (a nothing-less-than-disgusted 'Zeke' might slip through as the thought passes).
[Aside from all that:]
Do you think murder is against the rules? No one said.
no subject
[Aside from all that:]
Do you think murder is against the rules? No one said.