You have to make judgements about a person to interact with them, what level of understanding they have on the subject, what sort of vocabulary they'll understand, whether they are likely to judge you harshly, how to make them feel comfortable with you, etc.. Either you have incomplete information, you have all information or you have no information and presumably then avoid interaction. To be practical I think that it is actually a necessary part of social interaction, at present, to judge others based on incomplete data.

However, I could see the point where interactions would start by exchange of a data file, giving far more information than we ever normally get from even an acquaintance, which would aid interactions.

On the contrary I can't see how things can work without making judgements about people (what language to start a conversation in for example) when interacting.