In July, 1862, when Lincoln presented the Cabinet with a draft of the Emancipation Proclamation, Seward warned that it could prompt foreign governments to intervene on behalf of the South, and said that it should be delivered at a time of military strength, not weakness.

NEWYORKER: Union Man

"With this data now available from more than one study, it really becomes the responsibility of parents, physicians, and teachers to pay attention to the relative-age effect and not intervene with treatment and labeling of children who it's no fault of their own what time of year they were born, " Garland says.

CNN: Youngest kids in class more likely to be diagnosed with ADHD

Though a program displays panels showing all the critical processes of a real rig (fire and gas detectors, valve status, oil flow from the sea bed and so on), and then responds to the actions of the trainee by altering these displays appropriately, a human operator can intervene at any time if things seem to be going too smoothly.

ECONOMIST: Virtual reality

Because of the intelligence coordination that we do with a range of countries, including Israel, we have a sense of when they would get breakout capacity, which means that we would not be able to intervene in time to stop their nuclear program.

WHITEHOUSE: The White House