An idea that has been raised and argued for at the Occupy Sydney general assemblies was that “you leave your affiliations at the door when you participate in Occupy”, as a motion put it.

In September 2010 the UN General Assembly was devoted to a discussion on ending global poverty, to the fulfilment of the so-called Millennium Goals first adopted in 2000.

“There’s no such thing as a free lunch” is a phrase that became popular with economists many years ago. The conservative economist Milton Friedman even used it as the title of a book he published in 1975. It’s shorthand for the idea that you can’t really get something for nothing: even if something seems free, you pay for it in one way or another. Is that true?

It was almost unheard of. Last month, a Fairfax business writer hinted that capitalism – at least, the Australian capitalism that we all know and love – might be not quite perfect. Something, Stuart Washington wrote on February 7, is “broken” in Australia’s “pricing system”, and “I believe failures in pricing are posing grave dangers to what we know as capitalism”.

“The ultimate reason for all real crises”, Karl Marx argued in Capital, his seminal work on the laws of motion of the capitalist system, “always remains the poverty and restricted consumption of the masses as opposed to the drive of capitalist production to develop the productive forces as though only the absolute consuming power of society constituted their outer limit”.

It’s easy enough to see that there are many things in this world that need changing. Figuring out how to change them is a bit more complicated.

“Socialism sounds like a great idea, but it’s not really feasible. At least in the developed countries, workers are too brainwashed by the system, and the ruling class is just too powerful to be overthrown.” That is not a precise quotation from any specific person, but socialists frequently encounter arguments to this effect.

Australia has been much luckier than most countries in the current international recession. While unemployment has certainly increased, it has not risen as much as in most of the world and, at 5.4%, it is still lower than it was throughout the 1990s.

“Why can’t the left get together? Why are there so many different socialist groups?” Sometimes these questions are just an attempt to belittle the socialist left by right-wingers (who nevertheless think it perfectly normal that there should be many pro-capitalist parties). But it is also a serious question from unaffiliated leftists.