What’s important? Big Rocks First

A teacher puts a gallon jar on the desk and sets a pile of fist sized rocks next to it. She asks the class how many rocks they think will fit. As they call out their guesses, she places one rock after another in the jar. When she asks the class if it is full, they reply with a resounding “Yes!” But wait she says. Then she brings out a container of gravel. The smaller bits of gravel lodge amongst...
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