ExperienceUsed it: Respondents who have used an item.Heard of it: Respondents who have heard about an item, but haven't used it.Never heard of it: Respondents who have never heard about an item.SentimentPositive: Respondents who are interested in learning more about a technology; or are willing to use it again.Neutral: Responents who did not indicate any sentiment about a technology.Negative: Resp