Long cliffs on Mercury cut straight across older craters. What does that tell us?

1. A feature that cuts across another must have been made after it. 2. The scarps slice through craters, so the scarps came second. 3. These cliffs stand more than a kilometer high and run for hundreds of kilometers. 4. They look like wrinkles left by a slight compression of the crust. 5. A crust wrinkles that way when the planet inside it shrinks. 6. So Mercury contracted after most of its craters had already been dug. 7. Reversing the order contradicts the plain fact that the cliffs cross the craters. 8. Mercury shows no evidence of plate tectonics, and it has no liquid water to carve anything. _Source: OpenStax Astronomy (CC BY 4.0), section 9.5 Mercury_