How much of Einstein's world model was explained, where was it insufficient, and where was it wrong?

To start with the conclusion, Einstein's world model (theory of relativity) explained the "structure of spacetime" almost ...
gizmodo

A Forgotten Einstein Model of the Universe Describes the Big Crunch

Way back in 1931, Albert Einstein visited the U.S. for three months. Inspired by meetings with Edwin Hubble, he began thinking about the Universe differently, writing a paper in four days to get down ...
Forbes

Einstein's Model Of Light And Changing The Physics Of Empty Space

There's an episode of Star Trek: The Next Generation in which John de Lancie's nearly-omnipotent alien character "Q" is stripped of his powers and banished to the Enterprise as a human because fans of ...
Morningstar%2c Inc.

God Plays Dice!: New Theoretical Model Challenges Einstein and Hawking, Proposing Space-Time is Stitched Together: by researcher Raghu Kulkarni

Central to the SSM is the concept of the "Steady-State Informational Miner." This paradigm shifts the view of the universe from a static stage to an active, growing network. While Einstein's General ...