What did the ancient greeks rely on as a means of knowing their world

They rely on the stories and myths

Explanation:

The importance of myth is to explain unexplained events, attributing to them property or divine situations, with the myth events such as the origin of the world or natural phenomena were explained.The Greek philosophers were able to understand the complexity of things, but it was a very minority group and to explain all those questions so convoluted, myths were used.