The prediction that computing power will double every 18-24 months has been observed to have been true for the last approximately:

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BlackTom AI · Accepted Answer

The question asks about the time span over which the observed pattern of computing power doubling every 18–24 months has held true.
First, note that this idea is commonly attributed to Moore's Law, which describes roughly exponential growth in processing power over time, with a doubling every ~2 years.
Next, we can place this pattern on a historical timeline: Moore proposed the observation in the mid-1960s, and if we track from the mid-1960s to the present, that yields a period of about five to six decades, i.e., roughly 50 to 60 years.
A longer view helps account for the cumulative effect: even if the exact doubling interval has varied and occasionally slowed, the general trend has persisted across multiple decades, aligning with the 50–60 year range cited.
Regarding the answer options, this particular prompt section provides an explicit option value ("50 to 60 years") but presents no visible list of alternatives to compare against. When evaluating a single- option scenario, the reasoning hinges on whether that duration matches the historical arc of Moore-like growth. Given that the commonly cited beginning of this pattern is the 1960s and continues through today, a 50–60 year span is a reasonable summary of the observed period.
If one were to examine alternative framings, shorter spans like a few decades or longer spans spanning more than six decades would either understate or overstate the historical window, respectively, since the widely acknowledged era of rapid doubling has not been infinite in duration and has included phases of acceleration and plateau.
In sum, interpreting the question through the lens of Moore's Law and its historical timeline supports the idea that the observed doubling pattern has persisted for about 50 to 60 years, making that time frame a plausible and commonly cited answer.

Section Merge: MIS479W Spring 2025 Merged Mid-term 3 - Part 1

The prediction that computing power will double every 18-24 months has been observed to have been true for the last approximately:

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