Handle X Before X Prime
Act on an obvious harmful case now, then decide borderline variants as they arise
- Difficulty
- Moderate
- Time to result
- ~ongoing to results
- Steps
- 5
- Confidence
- 93%
Costolo argues that moderation teams can become paralyzed by slippery-slope reasoning: if they act against one clear offender, they worry they must already know how to handle every similar future case. His alternative is to address the obvious case, using the platform’s existing authority and the evident harm, then evaluate adjacent variants when they occur. This does not mean acting arbitrarily. The decision should be narrow, documented, and grounded in a defensible principle, with policy updated as repeated cases reveal a stable pattern. The central mechanism separates a present, observable X from a hypothetical X prime. It preserves the ability to intervene against clear threats without pretending that complex governance can be fully specified in advance.
Origin
Dick Costolo described his frustration with slippery-slope objections that delayed stronger action against threats and abuse on Twitter.
Core principles
- 01Do not let hypothetical edge cases block clear action
- 02Apply judgment in addition to written rules
- 03Treat precedent as guidance rather than paralysis
- 04Accept responsibility for decisions under uncertainty
- 05Revisit adjacent cases when they actually occur
How to run it
- 1
Define the Present X
Describe the actual conduct, evidence, affected parties, and harm without expanding into hypothetical cases.
Pro tip Use concrete behavior rather than ideological labels.
Watch out Do not act on speculation about what the person might do later.
- 2
Separate X Prime
List adjacent but meaningfully different scenarios and mark them as unresolved rather than treating them as current blockers.
Pro tip Record the distinguishing facts that could matter later.
Watch out Avoid promising that every superficially similar case will receive the same outcome.
- 3
Confirm Authority
Check the applicable policy, contract, role authority, and legal constraints before intervening.
Pro tip Remember that broad discretionary clauses may exist beyond enumerated violations.
Watch out Discretion should not override mandatory due process or legal protections.
- 4
Take Narrow Action
Choose the smallest intervention that effectively stops or limits the clear harm.
Pro tip Make the action reversible when uncertainty remains high.
Watch out Do not broaden the intervention merely to create a dramatic precedent.
- 5
Document and Learn
Record the facts, rationale, outcome, and unresolved variants, then update policy if a repeatable boundary emerges.
Pro tip Use later cases to improve consistency without rewriting history.
Watch out Undocumented discretion can become arbitrary or impossible to audit.
In the wild
Costolo described a user clearly threatening violence in a way that might not have matched a narrowly written policy provision. Rather than allowing the threat because a future borderline case might be harder, the platform could use its broader authority to remove the account and confront the next variant later.
→ The immediate harm is addressed without requiring a perfect universal taxonomy in advance.
A community manager receives an unmistakable targeted threat but lacks a rule covering its exact phrasing. The manager suspends the account under a general safety provision, records the evidence, and schedules a policy review for future variants.
→ Members are protected while the organization develops a more precise standard from real cases.
Common mistakes
Letting Hypotheticals Veto Reality
A difficult future case does not erase the observable harm and available authority in the present case.
Using Discretion Without Records
Undocumented judgment makes consistency, review, and accountability difficult.
Treating Every Variant as Identical
The method requires case-specific judgment, not automatic punishment for anything resembling the original case.
Is it for you?
Best for
It is best for governance decisions where the present case is clear but nearby hypothetical cases remain ambiguous.
Not ideal for
It is not ideal where due process, law, or safety requires a comprehensive rule before any intervention.
From the transcript
“well, who cares? We'll cross that bridge when we come to it.”
“we do need to go do X and we'll figure out X Prime when it happens.”
“The terms of service say we can remove your account for any reason or no reason.”
From the episode
Twitter (with Dick Costolo)
Dick Costolo