Function doubt_unread 

fn doubt_unread(
    knowledge: &Knowledge,
    due: i64,
    now: i64,
    missed: Option<&(i64, BTreeSet<String>)>,
) -> String

The same, at an alarm whose pull did not go through since it began (share::news_missed: when, and the devices whose entry or health claim says more since): any other known closed by what was read before is said in doubt, as last heard (sioul_core::health::doubts_unread).