Do IBM Watson Health's leadership change and layoffs mean A.I. is bad medicine?

Last week IBM announced that its Watson Health chief, Deborah DiSanzo, had stepped down from running the tech giant’s artificial intelligence division. Big Blue had been counting on Watson for growth, as its legacy businesses continue to shrink. But instead its once-hyped A.I. business has been scaled back with layoffs and now a leadership change, as Stat News reported last Friday.