nPeace
Veteran Member
Thanks.It is likely that *some* that is believed to be known is wrong. It is highly unlikely that the age of the current expansion phase for the universe is significantly wrong.
part of the way science works is by acknowledging that we can be wrong and that new evidence might overturn some of our ideas. But that doesn't mean we should find it *likely* this will happen. For example, for us to be wrong about the Earth orbiting the sun would require a spectacular conjunction of coincidences. The same is true for no evolution to have happened or for the universe to be significantly less than 13 billion years old.
But we can certainly be wrong about things like the distribution of dark matter, or on the details of galaxy formation, or on the nature of quantum gravity, or on any number of more specific topics. We also have to allow that any place where we are wrong will still have our current views as a good first approximation where they have been tested. So, the error bars may shrink and show we are wrong in details, but they won't grow to the place that the Earth is only thousands of years old or to where biological evolution doesn't occur.
If however, the expansion was not constant, how is it that the age could not be wrong - highly likely?