Here’s an interesting comment from John Barrow, who’s currently speaking at the Arrow of Time mini-series here in Oxford. With many theories, if you need to add an extra parameter, you typically make the theory more complicated (and in a sense, less symmetrical). With an FLRW model, however, you find that your model is less symmetrical when you take away a certain parameter – the cosmological constant.
Read the rest at Lumps 'n' Bumps
