The Curve of General Relativity

[read the short summary of conception]
Einstein stated that the space time is structural quality of gravity field. He described curved lines to explain the gravity.

If we look at how Newton found the idea of gravity, we realize that Newton only see an event of falling apple. But his consciousness made him able to see something behind the falling apple which is gravity.

Einstein's explanation of gravity is description of an event, just like falling apple in the Newton's observation. Then we need to 'see' behind this event.