You can see everyone else is constantly tweeting about how awful the Capulets are - your friends mostly aren't, but they're retweeting people who are. You remember one time you expressed some doubts about something the Montagues did and people you don't know turned up to tell you off. You think the Capulets might actually be right about something this one time, but you don't dare say it.

Private conversations give you more room to be wrong, to be uncertain, to be curious, to be uninterested. On Twitter you always have an audience.