The key is just not observation. Theory has a lot of issues. For that problem mentioned in the article see this https://en.wikipedia.org/wiki/Cosmological_cons

The key is just not observation. Theory has a lot of issues. For that problem mentioned in the article see this https://en.wikipedia.org/wiki/Cosmological_constant_problem https://en.wikipedia.org/wiki/Cosmological_constant_problem . As a joke, whilst I agreed hard to deal with matters and energy, but even nothing you can model that is tough. I love cosmology and reading about it. Always exciting. But not because of the human part. More positively as said in the article … a lot to be learnt, just do not use the word should you are ok I am ok.