When Jesus started teaching, He used parables. He taught His disciples how to interpret them, giving interpretations to some of them. The intended message of the parables was seen through interpretation.
When He started teaching in parables, He took disciples to the "other side" of the sea. Those things that happened on the other side make much sense when interpreted in the same way as Jesus taught to interpret the parables.
The interpreted parables give us spiritual concepts which provide a foundation for how to interpret stories that go beyond being a parable. These stories can be allegories which have an intended prophetic message, or at least contain important spiritual truths.
We will go to the other side to see what we haven't been taught.