When the source is provided, any reasonable fact checker should query the veracity of the information in that document to see whether the Treasurer is right or not or whether he is being a little bit cheeky and used a flawed report for his claims.
It would be wrong to blindly take the source as given, without question or consideration. To take that as the correct source might be making in error in the same way it would be wrong to use The Australian as a source for any impartial facts on Australia's industrial relations system.
A fact checker should, of course, also be a little more forensic and judge whether the information in the source document fits with the claim being made.
In the case of the ABC fact check on Mr Hockey's claim on debt and deficit, the ABC FCU took the Treasurer's Office reference to the IMF document as the definitive source of the claim that Labor left the Coalition with the fastest growth in spending and third highest growth in government debt among the countries compared. The ABC FCU said Mr Hockey's claim was "correct'.
What they didn't do was make a judgment call on the IMF document.
Importantly, the claim from Mr Hockey which the ABC FCU said was "correct" was based on a start date of 2012. The starting point ignores the fact that Labor delivered a Federal Budget and countless other policy changes between 1 January 2013 and when the writs were issued for the election in August 2013.
Even the drover's dog would see the starting point is wrong when judging what Labor left the Coalition.
There are no doubt similar concerns for the other 16 countries in the comparison – in the US for example, the fiscal cliff, debt ceiling debates and even Fed policy actions from 1 January 2013 would have impacted on the scenario for fiscal policy in what should have been the base year 2013. What was its growth in spending and debt from 2013 to 2018?
As I also pointed out, https://thekouk.com/blog/some-home-truths-on-abc-fact-checking.html#.UyJft_226f0 , the comparison that the ABC FCU and the IMF based its data on was the MYEFO document which included a fiscally explosive cocktail of policy decisions taken by the Abbott government in its first three months and parameter changes from Treasury – hardly the stuff anyone reasonable could serious sheet home to Labor.
I don't know whether Mr Hockey's claims are true or not and neither does the ABC FCU, at least based on their work on this issue.
Some smart person with a lot of time and a robust data base could no doubt work it out, but to say Mr Hockey is correct based on a document he gave the ABC FCU, it is a bit too cheap and easy.