Wirth's Law :
Software is getting slower more rapidly than the hardware is becoming faster.Gates's Law
It is a humorous and ironic observation that the speed of commercial software generally slows by fifty percent every 18 months thereby negating all the benefits of Moore's Law. This could occur for a variety of reasons: "featuritis", "code cruft", programmer laziness, or a management turnover whose design philosophy does not coincide with the previous manager.
Gates's Law is born of the frustration that many users feel due to the apparent tendency of commercial software to become slower with each successive incremental version, such that buying new hardware upgrades sounds like a reasonable idea.
Though the law's name refers to Bill Gates, Gates did not formulate or express it. Rather, the name refers to a perceived tendency of Microsoft products to slow down with each new feature or patch.
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