I heard the explanation that one was from physics and one was from chemistry. And they were both important to get the error bars low enough so they could move

I heard the explanation that one was from physics and one was from chemistry. And they were both important to get the error bars low enough so they could move over with confidence. See https://youtu.be/KBZD3tFny_E?si=VyqjpainWVgbY_NF https://youtu.be/KBZD3tFny_E?si=VyqjpainWVgbY_NF