King Charles I believed he was accountable to God alone and tried to give himself absolute power.
But eventually the English parliament and the courts got fed up with his excesses and cut his head off in 1649.
Power in the Westminster system has long been separated between the executive, the legislature and judiciary.
In Queensland, the government controls daily administration of the state, the parliament creates the laws and the courts enforce them.
After winning an overwhelming parliamentary majority in the last election, the Liberal National Party government has run the state and created the laws.
But this week the government changed the rules so it can enforce the laws as well.
Attorney-General Jarrod Bleijie will decide if an organisation or club is criminal or not, how long sex offenders will spend in jail and if workers injured on the job can seek compensation.
The former conveyancing lawyer has been heavily criticised for being too young and inexperienced, but Queensland University of Technology's Dr Mark Lauchs says people are attacking the man and not the ball.
"I don't think age or experience matters at all, it's a bad decision, it's wrong," he told AAP.
"You can set up a law specifically to cause harm to an individual or group and make sure it goes into effect.
"The safety we had in the old system was that, yes, I could make a law with intention of harming someone, but I didn't get to decide whether or not they were found guilty because there would be a separate, independent judiciary.
"Now it's absolute power. Those in power can do anything they like with no appeal."
King Charles I set up his own court, the Star Chamber, to arbitrarily punish dissidents, people who didn't agree with him and those who refused to testify.
After the revolt against him, the criminal justice system in common law excluded involuntary confessions, upheld the presumption of innocence and required proof of criminal charges beyond reasonable doubt.
But with Queensland's government now deciding who is guilty and what their punishment will be, Dr Lauchs says we've returned to the old ways.
"I'm not saying the attorney-general is going to abuse this new power, but in the current situation it can be abused," he said."That's a huge shift away from Western democracy and way beyond anything that's acceptable under any Westminster principles."