Slippery Slope Argument

An argument that an initial step can enable or increase the likelihood of a sequence leading to an unacceptable result.

A slippery-slope argument warns that accepting an initial step can make later, less acceptable steps more likely or harder to resist. Different versions appeal to causal progression, precedent, incentives, or an inability to draw a defensible boundary. They need not claim strict inevitability to raise a serious concern.

Assess the links rather than accepting a dramatic endpoint or dismissing the entire argument by name. Ask which actors, incentives, probabilities, and safeguards connect each step. A plausible mechanism alone does not establish the size of the risk, and a defensible stopping rule can weaken the predicted progression.

When to use it

When a decision is defended or opposed by predicting a sequence of escalating consequences.

How it can help

Inspect intermediate links, evidence, probabilities, and stopping conditions instead of judging only the first step or dramatic endpoint.