Invisible car

When I was a kid I got Odyssey, an astronomy magazine, which had a cartoon about the adventures of the robot Ulysses 4-11. One story had invisibility via "optical rerouting", moving or imitating photons from one side to the other.

Voila: http://www.engadget.com/2012/03/04/mercedes-f-cell-gets-led-camouflage/

Office sort

This is mostly for the CS types:

Say you're in an office, and someone brings in a stack of 500 papers that needs to be sorted. How do you think they'll naturally approach the problem, and how as someone brimming with CS knowledge would you advise them to sort it?

The American Family

Study of middle class American families:
http://online.wsj.com/article/SB10001424052702304450004577277482565674646.html?fb_ref=wsj_share_FB&fb_source=home_oneline

American children seemed relatively helpless compared with those in
other cultures she and colleagues had observed.

Another video clip shows a girl around 5 years of age in Peru's Amazon
region climbing a tall tree to harvest papaya, and helping haul logs
thicker than her leg to stoke a fire.

In 22 of 30 families, children frequently ignored or resisted appeals to
help, according to a study published in the journal Ethos in 2009. In
the remaining eight families, the children weren't asked to do much.

Relevant report: anecdotal observations of French childraising: http://online.wsj.com/article/SB10001424052970204740904577196931457473816.html
and thoughts on "the teenage mind", caught between early puberty and late responsibility
http://online.wsj.com/article/SB10001424052970203806504577181351486558984.html