Editing Keynesianism (section)

== <span style="color: #FFFFFF;">Applying</span> ==
'''Modeling 'The Multiplier Effect' (Predicting the impact of a $1B stimulus):'''
<syntaxhighlight lang="python">
def calculate_stimulus_impact(amount_billions, marginal_propensity_to_consume):
    """
    MPC: How much of an extra $1 people will spend (vs save).
    Multiplier = 1 / (1 - MPC)
    """
    multiplier = 1 / (1 - marginal_propensity_to_consume)
    total_impact = amount_billions * multiplier
    
    return {
        "Initial Spend": f"${amount_billions}B",
        "Total Growth": f"${round(total_impact, 2)}B",
        "Economic 'Lift'": f"{round(multiplier, 2)}x"
    }

# Case: People spend 80% of their stimulus check
print(calculate_stimulus_impact(1, 0.8))
</syntaxhighlight>

; Keynesian Landmarks
: '''The General Theory (1936)''' → The book that "Killed" the old economics and became the blueprint for the modern world.
: '''The New Deal (1933-1939)''' → FDR's massive program of government works (dams, parks, art) that brought the US out of the Great Depression using Keynesian ideas.
: '''The Marshall Plan (1948)''' → Using massive US government spending to "Rebuild Europe" after WWII, creating a global boom.
: '''The 2008 Financial Crisis''' → When the world's governments "Bailed out" the banks and spent billions in "Stimulus" to prevent a new Great Depression.
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