I asked you to run me through your calculation, followed by my best estimation of your argument. If you can't provide your reasoning, then I can't do any better

I asked you to run me through your calculation, followed by my best estimation of your argument. If you can't provide your reasoning, then I can't do any better than my guess. You're the one who has taken the stance that people who say "standing is bad for your back" are universally failing to account for the relative scale of the two considerations. I think it's likely that you're making a number of errors yourself when coming to that conclusion, and I would appreciate it if you would share them.