[krapp]

If you look into the examples of oracular statements from Delphi[0], and assume them to be an accurate representation, many of them are vague enough that a "true" interpretation can be found in hindsight from various outcomes.

And it is likely that a lot of those prophecies were informed by having a unique amount of access to political and social dealings throughout the Greek world. It helps when all the kings and all the priests come to you and tell you their secrets.

[0]https://en.wikipedia.org/wiki/List_of_oracular_statements_fr...