S Curves. Progress still happens even near the top of the S curve, but it's like watching yourself age as you brush your teeth every morning. Day to day, you're seeing the same face in the mirror. Year to year... probably still pretty much seeing the same face. But jump 4-5 years, you've changed. Compare 2019 to 2024, taking the rise of the e-bike out of the picture, we're riding bikes that are yet longer and lower and slacker, steeper seat tubes, bigger brakes, often with some combination of better electronic shifting, high pivots, chain growth defeating tech, etc, etc...