You're making it out like there are no measures of when to open up.
There are. And we haven't reached them yet.
What we need is not necessarily to have zero new cases for a week (though that'd be great), but to have widespread testing and only find positives of known positive contacts.
This means there isn't undetected community transmission (depending on how widespread the testing is).
Here's the thing. We still have people popping up every day in Victoria and testing positive with no known positive contacts. It is still moving silently in our community. We still have no inherent immunity. We still have no effective antivirals. We still have no vaccine.
If we start opening up now, there is no reason why this wouldn't ramp up again. None.
If we can get our tracing, monitoring and testing levels to the point where we can actually effectively quarantine and isolate, then we can talk about opening up.
There's this odd sense of 'come on, surely we've been locked down long enough. It has to be better by now.'
It's like we think the virus will get bored and go away.
Nothing has changed. Not until we know where every case in the state came from. And there are two ways to do that. Proper testing and tracing, or getting our cases down to zero.
The frustrating thing is we are not far off.
But this is the exact opposite of near enough is good enough. Near enough is not enough.