Ski etiquette and Gwyneth Paltrow on trial in Park City

What they're saying: Wendell Gibby, a neuropsychologist, said brain images suggest it's improbable that Sanderson crashed into Paltrow.

• The head trauma likely resulted from a skier slamming into Sanderson, Gibby said, adding, "The rib fractures certainly corroborate that there was enough force to cause a head injury."
• "After his accident, [Sanderson] deteriorated abruptly. And many of the activities that he used to do, he stopped doing," the physician said.

Flashback: Sanderson sued Paltrow in 2019, accusing the Goop founder of being "out of control" on the ski hill at Deer Valley Resort, according to court documents obtained by CNN.

• Paltrow denied the allegations and countersued, claiming Sanderson collided into her, and suggesting he's trying to capitalize on her fame to get her to "pay him millions," per court documents. She is seeking the cost of her lawyer fees.

Between the lines: "At its core, the case hinges on skiing etiquette," The New York Times reports. "Both Ms. Paltrow and Mr. Sanderson have claimed that they were the downhill skier and therefore had the right of way on the beginner's run."