Remember in DS9 when Jake needed the money for the baseball card and was tryina scab money off Nog because he didn't have any himself?
Nog: "It's not
my fault your species decided to abandon currency based economics in favor of some philosophy of self enhancement"
Jake(enthusiastically): "We work to better ourselves and the rest of humanity"
Nog(finally saying what the audience was always wondering):"what does that
mean exactly?"
Jake(exasperated): "it means we don't need money!"
Nog(smug): "well then...you don't need
mine"
huh? how can "communism" be a failed society when it hasn't even been tried yet?
weren't the russians ''commie''? and aren't the chinese?
No. They were/are one party states with a centrally planed economy. Neither ever had the word communist in their name (they had communist parties whos eventual goal was supposildy communism but they were too comfortable with their power monopoly to do anything to get there).
There are many examples of people/countries calling themselves things even though they are the exact opposate:
-President Bush going on and on about "freedom" then illegally wiretapping his own citizens and having a creepy obsession with restricting the rights of gay people.
-The "peoples republic" of North Korea which is no such thing.
-The "worlds series"
-Our last Prime Minister called himself "the only socialist left in Irish politics", when he was easily the most right wing PM we've ever had economically.
Take an example from the show, the Klingons always going on and on about honor yet they were corrupt to the core.
Communism is basically a community or series of communities who operate on cooperation rather than market based pricing and competition etc there have been a tiny number of examples of it in practice all of them short lived, the paris commune being the most famous example.
They "worked" in the sense that people got what they needed in terms of goods and services but they've all been on a small scale (city or town) nothing like it has ever been tried on a national scale and indeed that would probably be impossible with globalized trade (how would they pay their trading partners when they don't use money?) so the whole planet would literally have to switch to it at the same time.