Some socialists (such as William Morris) promised a perfect future. Their socialism was based on an imagined future state where there is to be perfect equality, no explotation, peace & fellowship, etc..
Sometimes modelled on an imagined past (a golden age before capitalism).
Marx- ''too romantic''.
Trotsky spoke of 'permanesnt revolution' (i.e socialists should continue to keep changing; there is no end when perfection is attained)
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