{
  "required_concepts": [
    "visual vestibular proprioceptive mismatch",
    "semicircular canals and otolith organs in plain language",
    "sensory conflict or neural mismatch",
    "postural instability as complementary or competing account",
    "autonomic nausea sweating pallor",
    "driver passenger prediction and control caveat",
    "reading and stable horizon",
    "individual susceptibility and habituation",
    "debated toxin defense evolutionary hypothesis",
    "medication drowsiness and no driving",
    "motion sickness is not an inner-ear self-test",
    "neurological and dehydration safety boundary"
  ],
  "required_sources": [
    "J. T. Reason and J. J. Brand in sensory rearrangement context",
    "Charles Oman in mathematical sensory conflict context",
    "Alan Benson or Robert Kennedy in operational motion-sickness context"
  ],
  "practical": [
    "look at horizon or stable external reference",
    "head stability and ventilation",
    "vehicle-specific seat choice with caveats",
    "gradual habituation"
  ]
}