His correction says:
The problem isn't with the thickness number! It's with the whole concept of acceleration!
His correction is very fuzzy and doesn't address the problem in any way.
The problem is that acceleration isn't measured in millimeters, or feet, or any unit of length. It's measured in units of length per time-squared (say, mm per year-squared).
Did Bailey take basic physics? Or did he forget it all?
How come people who don't know science get jobs writing for a place for decades, and I'm still struggling as a freelancer? Must be my noxious personality.