TL;DR: Headlines and two-point comparisons can’t prove a “sick out.” This post shows how Process Behavior Charts (PBCs) help distinguish real signals from normal variation–and why data alone can’t confirm intent or blame. As a frequent flyer on American Airlines and a former DFW-area resident, I pay a lot of attention to the troubled airline. American is currently going through a bankruptcy, er “restructuring,” and there’s a lot of what’s called “labor strife” happening right … Continue reading Can Data Really Prove a “Sick Out”? What Process Behavior Charts Can–and Can’t–Tell Us