Probably not all that relevant to the story, but my head-canon on the second-episode is as follows:
Ryoko doesn't have a sense of taste because she doesn't need to eat. Having been designed by the "greatest genius in the universe", it seems likely that she also doesn't feel pain from anything that can't actually injure her, and it takes a lot to injure her. For that matter, from her reactions it seemed that getting her hand cut off by the Tenchi-ken in the first episode was inconvinient rather than painful.
From this, I think the interigation scene wasn't Ryoko getting stimulated by pain but not feeling pain at all, just stimulation. That and a fair amount of messing with Ayeka's head.
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No, I don't believe the world has gone mad. In order for it to go mad it would need to have been sane at some point.
Ryoko doesn't have a sense of taste because she doesn't need to eat. Having been designed by the "greatest genius in the universe", it seems likely that she also doesn't feel pain from anything that can't actually injure her, and it takes a lot to injure her. For that matter, from her reactions it seemed that getting her hand cut off by the Tenchi-ken in the first episode was inconvinient rather than painful.
From this, I think the interigation scene wasn't Ryoko getting stimulated by pain but not feeling pain at all, just stimulation. That and a fair amount of messing with Ayeka's head.
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No, I don't believe the world has gone mad. In order for it to go mad it would need to have been sane at some point.