He measures and analyzes motions like swim strokes or volleyball spikes in fine detail, looking for that one adjustment that can mean the difference between silver and gold.
This feature enables fine-tuning of the focus in macro, composition selection when shooting, and exposure adjustment all without looking away from subjects.
That's not the only way of fixing it, but if you made a slight adjustment like that, then Social Security would be there well into the future and it would be fine.