The body as an engineering problem is often longevity science's favourite self-image.
"The world wants me to die."
That was Bryan Johnson this weekend, the polarising American millionaire who has made it his life's mission to not die. As in, not ever. And to spend his substantial fortune backing that mission.
He was taking stock of the reaction to news of his incurable autoimmune gastritis diagnosis.
By his own tally, 1,900 articles appeared in a matter of days, and while many people were saddened, "joy dominated the commentary".
