The context of the following conversation is Austin predicted cancer rates in patients would continue to go down due to the new breakthrough treatment they developed.:
Austin says This new breakthrough has proven to be effective..
The friend responds Why do you say that?.
Austin responds Because the cancer rates are down and continue to go down..
The friend responds That sure is impressive, you should continue with the hard work..
Austin responds We will, this new breakthrough is just the start..
The friend responds Hopefully the cancer rates can go down to zero..