RFK Jr.: "You probably don't understand this because you're not a scientist." That comeback landed so fast even RFK Jr. couldn't vaccinate himself against it. Why the Moment ResonatedThe Dana Bash RFK Jr. exchange stood out because it transformed a technical policy discussion into a personal confrontation. The RFK Jr. measles outbreak discussion underscored why the interview carried such significance. Kennedy's Position Remains ComplexThe RFK Jr. vaccine autism comments reflected a position Kennedy has maintained for years.