Children are many things these days, but they certainly aren't invisible -- especially on the Internet, where it is the kids, these adolescent messengers, who are becoming the McLuhanite message of our networked age.
The flip side of the view that women can do anything if they "just jump" is the assumption that anyone who doesn't should remain invisible.
Today's digital version of that innocent crusade, led by the pied-pipers from Invisible Children, probably won't end so tragically.
This dry riverbed marks the invisible boundary beyond which she can't safely go.
In London almost everything is labeled 'You mustn't touch, ' and though the label is invisible, it's just as bad, because you know it's there, or if you don't you jolly soon get told.
When she was obese, Hill says, she felt almost invisible, and even though she didn't want to believe it, people ignored her.
"As long as the invisible labor is borne by women, things aren't going to be equal, even if surveys show they are, " Smock says.
And for those cyclists who want to be safe but can't stand to be seen wearing a helmet, the world's first "invisible" bike helmet is now for sale.
The idea that there is no god (or some secular version of him) meting out cosmic justice through the market's invisible hand is unsettling, even to market advocates, but it shouldn't be.
Since UPS began shuttling parcels from Seattle department stores with a Model T Ford and a few motorcycles in the early 1900s, it has become an almost invisible hand in the U.S. economy (see chart).
These four snapshots suggest rare earths aren't so different after all from any other good or service for which markets set prices and invisible hands allocate supply and regulate demand.
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