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Babbage embarked on an ambitious venture to design and build mechanical calculating engines to eliminate the risk of human error in the production of printed tables. The 'unerring certainty of machinery' would solve the problem of human fallibility. His work on the engines led him from mechanized arithmetic to the entirely new realm of automatic computation. Tabular errors provided a practical stimulus. But this was not his only motive. He also saw his engines as a new technology of mathematics.

It was not only the grindingly tedious labor of verifying a sea of figures that exasperated Babbage, but their daunting unreliability. Engineering, astronomy, construction, finance, banking and insurance depended on printed tables for calculation. Ships navigating by the stars relied on printed tables to find their position at sea. The stakes were high. Capital and life were thought to be at risk.

America's post-World War II period is often portrayed as a time of affluence and contentment, but fear of atomic war and Communist infiltration also marked the era and affected the decisions Americans made about their lives and futures. Fear of atomic bomb attacks on the nation's cities helped motivate people to move to the relative safety of the suburbs. Some Americans built fallout shelters to protect their families while others, shocked by the prospect of nuclear annihilation at any moment, sought to live for the present.

Once the first atomic bomb was dropped on Japan, Americans realized a new era in history, one defined by the ability of humans to destroy their world.

Positive portrayals of atomic bomb blasts, along with toys and games that made light of atomic bomb destruction like those in the case below, may have helped diffuse some of the fear the American public felt about the bomb by desensitizing them to the devastation an atomic bomb could cause.