DUNCAN, S.C. -- Why did cellular telephone technology penetrate Asia so rapidly that in many places there are more cellular phones than hard-wired phones? The reason is that cellular technology arrived at just the right time, ahead of the time when there was a fully wired infrastructure, so wireless technology didn't need to compete with a highly capital-intensive predecessor. Much the same logic will apply as the supermarket industry in the United States and elsewhere looks at the ...

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