Wendy Freedman

We're trying to push the limits.

We're trying to understand what is governing, what are the constituents of the universe?

How is it evolving?

but we don't yet have all the answers and we need really accurate data to do that.

And so I would say it's not that this is completely solved.

I think, you know, we need to do a better job showing that there is a significant tension.

And as the data improve in future, this is going to go one way or the other, right?

Either the signal is going to improve or it's going to

fade away.

And one of the examples is recently with measurements of the microwave background, there was a tiny little hint in the measurements from the Atacama Desert, the cosmology telescope, in an early release of theirs that maybe in the polarization there was a hint of what might be due to evolving dark energy that could explain the Hubble tension.

But they just come out with a release with much more data, and the signal just disappeared.

It was noise.

If it had been real, it would have been really apparent, but it went away.

So that's what happens.

You see things at a level of significance that we call 2 or 3 sigma.

5 sigma is supposed to be the gold standard.

It would be a 1 in 1.7 million chance that it isn't correct.

I just don't think we're at that level yet.

We have more work to do.

This is different.