Your eyes dart left, right, up, and down of their own free will all day long. Picking out subtle changes around you; the erratic walker who suddenly changed direction without a plan, the flickering TV with that show, that one that, you know.
What they also do is keep an eye on those moving things you call kids.
The busy shopping centre, the overly elaborate underground carpark, or the icecream shop with too much choice.
Use those peepers, they’re powerful things when it comes to wrangling your little ones.