There is no reason why the work of scientists has to be officially confirmed before being published.
Conclusion
There is no reason scientists' work must be officially confirmed before publication.
Intermediate Conclusion
Poor scientific work by any one scientist, from careless reporting to fraud, is not harmful.
Evidence
A confirmation system already exists: other scientists replicate results.
Poor work will be exposed and rendered harmless when others run the experiments and get disconfirming results.
Evaluate
As the other lawyer in the room, we're trying to argue that there is a good reason why scientists' work must be officially confirmed before publication.
The author will say,
How do we respond to that?
I'd probably say,
What if some findings are published in such obscure places that other scientists never see it / never test it / never validate it?
What there would just be too many findings for scientists to verify them all?
Goal
Look for an answer that highlights a potential problem with just publishing scientific work before it's been confirmed.
The author thinks our safety net is the confirmatory testing of other scientists. The answer will probably point to a breakdown in that safety net (some published experiments would never get verified because _____ .)
Or it'll suggest that unconfirmed findings could do harm in the meantime, between when they are published and when they are eventually disconfirmed by other scientists.