Learning curve-ture of the spine

In my current job, my predecessor was slightly taller than me.
In my previous job my predecessor was slightly taller than me.

Twice in the past year, I have self-diagnosed early on-set arthritis.
Symptoms - pain in my lower back, both knees, and general air of gloominess brought on by thinking "I am getting old because my knees and back hurt."

Twice in the past year, my supposed life-impairing condition been miraculously cured by adjusting the height of my office chair.

I'm an idiot. An idiot who doesn't learn.

If Doctor Pavlov were looking for candidates for his experiments, I would be rejected.