Hm, how planned does an economy need to be to be counted here? Surely someone must have studied china's amazing growth for 5-ish decades? Or are we talking about theoretical works?
There can be many reason why it happened, both inside and outside of a "communism doesn't work" framework. Anyway, I'm not sure why I even made a comment. Maybe I was just bored.
How about this: Total freedom is also freedom to murder competition and abuse customers. A little planning, like making some basic framework of laws can make sense.
In a very stable society you can observe free trade and make predictions, and do planned economics based on it. However, things will change over time, and again you need...
If theoretical, then "The General Theory of Employment, Interest and Money" should be considered? Or in general Keynsian economics surely must have lots of texts?
I don't think it actually is better, I think it is a cancer, but surely lots of people have been convinced and written stuff about it, like in all other subjects?
The original graphic was poking fun at the lack of information, I think it merits a good look, but no one in their right mind will be able to do it: They will be ROTFLMAO too hard.