Why Command Economies Stall

Frames the driving question with the Soviet growth curve: rapid 1930s–50s industrialization, then a visible slowdown in measured productivity from the 1960s onward, years before the system collapsed.

• The Soviet economy grew fast, then stopped generating productivity growth
• This is not the same as an economy that shrinks
• The question is about the mechanism that ends growth in output-per-input

The learner is shown two stylized firm-level tables. In Table A, output rises mainly because more workers and machines are added. In Table B, output rises mainly because each worker produces more over time. The learner chooses which pattern they would expect from a centrally planned economy, and why.

• Productivity = output per unit of input
• Inputs can grow; what matters is whether output per input also grows
• Commit to an intuition before the evidence scene

Presents a productivity-versus-input chart for the USSR from roughly 1928 to 1989. Total output keeps rising; total inputs (labor plus capital) also keep rising; but output per unit of input climbs sharply until the late 1950s and then flattens, with a slight decline visible by the 1980s.

• Inputs and output both continued to grow for decades
• Productivity growth front-loaded into the 1930s–50s
• After about 1960, output per input stops rising — this is the stall

Sets up the mechanism with two concrete signals that a command economy lacks: (1) market prices that reflect relative scarcity and quality of inputs and outputs, and (2) competitive selection — profit, loss, entry, and exit — that rewards firms adopting better techniques and punishes those that do not. A diagram contrasts how a shoe factory receives signals in each system.

• Market prices carry dispersed information about scarcity and quality
• Competition selects for firms that adopt better techniques
• Both signals are weakened or absent when the state owns and assigns everything

Explains the mechanism in two parts. (1) Without market prices, planners cannot read relative scarcities or quality differences across millions of goods, so resources are misallocated and waste persists. (2) Without competitive selection, state firms are judged on plan targets rather than efficiency, so they have weak incentive to adopt better techniques. Inputs keep being mobilized, but the engine that converts inputs into more output per input is broken.

• Information failure: prices are the only scalable way to communicate local knowledge
• Incentive failure: soft budget constraints remove the penalty for inefficiency
• Together, the system can still add labor and capital, but not get more output per unit

Applies the information-plus-selection explanation to a hybrid case. The learner manipulates sliders representing how much of the economy is privately owned versus state-owned, and how much product-market competition exists. The widget shows a stylized productivity-growth response, and the learner must judge whether the same mechanism explains fast growth where competition is strong and stalls where it is weak.

• The mechanism is about prices and competition, not ownership in isolation
• Productivity growth appeared in sectors with real market signals
• Stalls appeared in sectors where the state set prices and absorbed losses

Marks the limits of the explanation. The mechanism does not say command economies cannot industrialize at all, cannot grow total output, or collapse on their own without external shocks. It also does not claim markets always generate productivity growth — they fail too, for different reasons.

• Command economies can mobilize inputs and grow in physical terms
• Markets can also stagnate when competition is weak or prices are distorted
• The claim is specific: this mechanism explains the loss of productivity growth

Directly answers: a command economy stops generating productivity growth because it removes the price system that disperses information about scarcity and quality, and removes competitive selection that rewards better techniques. Inputs continue to be added, but output per input plateaus, so the economy grows without getting more efficient — and eventually cannot sustain growth from inputs alone.

• Productivity growth requires both information and selection
• Command planning suppresses both at scale
• The stall is a structural consequence, not a crisis