Mina and Atri have served as excellent examples of man machine relations this season.
Both shows deal with different methods of communication via external actions and auditory cues.
Text input
Both accept natural spoken language as text input. Mina also accepts other devices syncing with her to provide text input. You could edit documents hosted within her on your phone. I haven’t seen her accept a keyboard being plugged directly into her, but it would likely work given she has ports. Atri doesn’t appear to be compatible with any wireless protocols, and though she has some form of data transfer port, it doesn’t appear to be readily usable for a keyboard.
Visual input
Both actively label and map out all things and their positions in 3D space. Both have OCR, automatically store text, and understand what they read, as they are able to form rich connections between new and old concepts. Both create 3D maps of their homes, and clearly make new maps as needed. Mina seems to only make maps of buildings, which is sensible. Their binocular depth sensing appears similar to ours, likely around a 60 degree arc.
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Mina stands still, looks up and will explain what she’s “thinking” about when asked. This denotes that she runs communication protocols separately, thus she’s still somewhat useful.
Atri does a goofy little dance while explaining what she’s doing.
Communicating intent
Both explain what they are doing using natural language. They are both capable of devising plans to do something and then communicating this with their masters for confirmation. Both can do so without communicating. Mina will cook surprise meals without consultation, she does use feedback to ensure her plans align with her master. Atri has been shown to do the same.
Hand gestures
Both understand all common hand symbols. Notably, Atri shows far greater proficiency at gestural communication. Atri takes cues from context to help decipher intent. Mina just has standard interpretations which can be wrong, but makes more sense from a practicality standpoint.
Facial gestures
Both are excellent at deciphering emotions from people. Mina is not particularly good at facial gestures due to having a hard plate for a face. She is surprisingly capable of emotional signaling through tilting her head and moving her eyes. (Mina will deny having these emotions while displaying them, for some reason.) Atri is incredibly expressive, given that physically she is essentially a woman with metal bones. Her ability to read emotions appears to be lesser than Mina. This could simply be because Natsuki is volatile and emotionally unstable. Atri would likely be able to read Takuma almost as well as Mina.
Affection
Providing their master with affection is important for a robowaifu. Mina does so too forcefully. Atri does so too forcefully. In completely different ways. Mina applies too much pressure. Putting her owner in continuous danger by holding him too hard. Her kisses leave bruises. Atri is aggressively “flirty” to the point of causing distress. Constantly attempting to seduce her master when alone at night and loudly dreaming of them doing erotic things when she’s denied. A machine should not be this libidinous, unless previously prompted to adopt that persona.
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