>>65695
>Then you implement a basic income raised through taxation of the wealthiest people (let's say half the minimum wage or so). With that extra income people start consuming more and aggregate demand goes up.
Here's your error. No, they don't start consuming more, and demand doesn't rise. Put simply, the poor consume more because the rich consume less, but total consumption stays the same. Of course, what is consumed changes; you will see a rise in the demand for potatoes and kool aid and a lowering in the demand for caviar and chardonnay. Most likely, you will also see an increase in time preference, as the poor always tend to save less and consume more in the present, and naturally also a decrease in the demand for capital goods, as the poor also don't buy them. You can expect productivity to decline as a result, especially in the long-term, or rather to rise more slowly.