I was thinking about the voice intonation. For example the sentences "this is really great" or "how do you do? -> I'm fine, thank you" can have opposite meaning

I was thinking about the voice intonation. For example the sentences "this is really great" or "how do you do? -> I'm fine, thank you" can have opposite meanings depending on the intonation. This explains a lot of the misunderstandings on written forums. It should be possible to train a neural network to catch those special intonations, but it is IMHO substantially harder than the initial project, with uncertain results.