LOL, well I look at it like this: Big Al did all his homework on a chalkboard. The new school has the benifit of equipment the Einstein could only dream about in his day, with computer models, observation and such. Even Hawking has the benefit of being able to revise his theories. One wonders if Al wouldn't have done the same had he had modern resources.
"The quantitative description of the Universe by General Relativity requires obtaining solutions to what are termed the Einstein field equations. These are 10 equations that must be solved simultaneously; they are notoriously difficult, and only a few solutions are known. (Technically, the equations to be solved are known to mathematicians as coupled, non-linear, partial differential equations; we may take that as precise shorthand for "very difficult to solve"!)
Solutions of the Equations
Among these solutions, there are two general classes:
Static Universes
Dynamic Universes
where static universes have distance scales that are constant in time and dynamic universes are either expanding or contracting over time. It may be shown that the cosmological principle (the assumption that there are no preferred positions or directions in the Universe) is inconsistent with a static universe. That is, the cosmological principle requires that the Universe be either expanding or contracting.
The Cosmological Constant
When Einstein first realized that the solution of his equations subject to the constraints of the cosmological principle led to universes that were not static, he was dismayed..."