Get-There-Itis: The Bias That Outflies the Weather

Continuation bias — colloquially, get-there-itis — is the tendency to press on with the original plan in the face of mounting cues that it is no longer safe. It is the quiet engine behind an outsized share of general-aviation weather accidents. The pilot is not stupid, not reckless, not untrained. The pilot is committed to a plan and the plan has begun paying a psychological cost that gets harder to abandon as the flight progresses.

The mechanics are ordinary. Sunk cost: an hour of preflight, taxi, and climb has already been spent. Social pressure: someone is waiting at the destination. Perceived competence: turning back would be an admission that the original decision was questionable. Expectation: the forecast said scattered thundershowers, and this line of building cells is being read as "not that bad yet." Each cue is small. Together they nudge the decision line downstream, one nautical mile at a time.

The counter is not more willpower. Willpower is what continuation bias runs on. The counter is a diversion plan committed to before the weather asks the question. Two decision points per leg is a reasonable minimum: one at halfway, one at the last airport that still guarantees a safe return. At each, the pilot compares the current picture to the preflight picture — ceiling, visibility, precipitation, aircraft state, personal state — and either continues, holds, or diverts. Only one of those three options requires the plan to keep unfolding.

Committing publicly helps. Tell your passenger, or write in the margin of the paper log: "if XYZ ceiling is below 3000 by the time we're overhead, we're going to ABC." A pre-committed rule is a chain-breaker. A rule you make up while looking at the weather that's already convinced you to keep going is not a rule. It is a permission slip.