American Express said it was having to adapt parts of the business as more customers make payments online or via mobile.

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Almost by definition, larger companies have more moving parts, each of which must adapt to change.

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This diversity helps tumours adapt to become untreatable and colonise new parts of the body.

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In the original research, he said, he and fellow researchers found a rich human capability to adapt to things like manipulating several virtual limbs at once, using various parts of their real body.

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