system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What exactly did Goldman Sachs do that they are suddenly getting blamed for the Greece debacle?

In the last few weeks, the number of commenters claiming that Greece would be alright if it wasn't for those rats at Goldman Sachs have been astoundings. What, leaving aside hyperbole and conspiracy, did they have to do with Greece getting $300 billion plus in debt? I know there must be *some* basis to these comments.
gpt
Goldman Sachs helped Greece hide how bad their financial problems were to make them look like a safer investment than they actually were by hiding debt.  They used some very complex financial transactions to obscure what the debt really was, which allowed Greece to go to the Eurozone and say that they were in compliance with EU rules about debt and could come onboard as part of the Euro currency zone.  Because they were part of the Euro currency zone, the EU central bank loaned them money to even higher levels which they then couldn't afford to pay back when the economy imploded in 2008.