Enterprise test>  db.foo.find().skip(1).explain().queryPlanner;
{
  winningPlan: {
    isCached: false,
    stage: 'SKIP',
    costEstimate: 0.6246551, <- cost must be equal to the cost of the input stage?
    cardinalityEstimate: 9999,
    estimatesMetadata: { ceSource: 'Metadata' },
    skipAmount: 1,
    inputStage: {
      stage: 'COLLSCAN',
      costEstimate: 4.2291755,
      cardinalityEstimate: 10000,
      numDocsEstimate: 10000,
      estimatesMetadata: { ceSource: 'Metadata' },
      direction: 'forward'
    }
  },
  rejectedPlans: []
}