"Einstein rejected a 5-dimensional solution because it didn't feel right..."
Let's not forget, Einstein also rejected the cosmological constant and the expansion of the universe...I think he felt it didn't feel right either.
Later he claimed it was his biggest mistake...
"Let's not forget, Einstein also rejected the cosmological constant and the expansion of the universe...I think he felt it didn't feel right either."
One of Einstein's many mistakes.
Much of his work is being reformulated.