[piskov]

> A phantom read is one where a transaction runs the same SELECT multiple times, but sees different results the second time around

> Under the SQL standard, the repeatable read level allows phantom reads, though in Postgres they still aren't possible.

This is bad wording which could lead to an impression that a repeatable read may show different values. Values in rows will be the same but new rows may be added to the second result set. New rows is important as no previously read rows can be either changed or deleted — otherwise there will be no repetition for those rows second time around.