Is Twitter irredeemably flawed? A growing list of critics say yes, including a philosophy professor who told us this week that she stays off social media because it has no constructive value. Journalists have been criticized for their reporting, largely via social media, on stories like the Jussie Smollett case. But defenders of Twitter say it retains a tremendous reach and potential. So how to get the most out of it? Our guests weigh in: Emily Hessney Lynch , director of content at I Heart ROC,