Even geology papers about Heart Mountain are like, "Look, we all agree this 'volcanic gas earthquake hovercraft' thing seems like it can't possibly be right, but..."
Had to look it up, and glad I did: "the largest landslide ever found on Earth's surface (larger landslides exist in the ocean)" ... I hearby move that landslides in the ocean be renamed as waterslides.
The inflection point was probably in late 1966 or 1967, so when Neil Armstrong flew to space on Gemini 8, plate tectonics was not widely accepted, but when he landed on the Moon three years later it was the mainstream consensus.
Many things about Star Wars were not well planned out, but having a 37-year-old in old-age makeup play the Emperor in Return of the Jedi was such an incredible call.