It is strange to think that Einstein made a blunder. However once shown that our universe was actually expanding he removed his cosmological constant and simplified his equation to:
G = 8 * π * T
A beautiful equation.
But our reality and as best as our observations can confirm, there are errors between this ideal and what is actually happening. In my blogs I point out that what I write is fiction and here is my proof that even the most accurate description we can come up, is flawed because our reality is not what we think it is.
So we continue to try and understand.