My family had a healthy idea of limits, closer to the "free range" philosophy, before such a term was required.
Our neighbors across the street, however, were the prototype for helicopter parents.
While my sibling and I gained confidence and navigational skills by biking around our confusing neighborhood before the days of GPS, the neighbor's kids weren't allowed to go down the street unsupervised. My siblings and I stood alone on the corner bus stop, but the neighbor's mom sat in her car and only released her kids when the bus had arrived.
At the time, my parents made fun of theirs for holding such a tight leash. We also pitied the kids because they panicked about being "lost" when my siblings brought them on a walk around the block.
But now I see kids sitting in cars at bus stops as the norm. And of course, stories like the above article go to show that the helicopter style has won (for the time being.) The people who were raised to fear everything outside their front yard are now parents themselves.
It's not just cognitive. We lose taste buds with age, and the ones that remain shrink and lose sensitivity.
It makes sense if you think about it. Bitterness is associated with a lot of poisons. Sourness is associated with spoiled foods. Having a strong aversion to these tastes during childhood compelled our ancestors to avoid dangerous foods during their most fragile stages of life.
Then of course, sugar is a quick source of energy. It should be a given why a quick source of energy benefitted our ancient ancestors (for whom food was much more scarce.)
In short, that increased childhood sensitivity allowed our ancestors to survive until adulthood.
So parents - next time a kid complains about their dinner being too bitter, take comfort in knowing that if they were ever exposed to actual poison, they'd avoid it with the same urgency.