If you are talking about an individual tool, then no. It lacks a metabolism, uses no energy and is incapable of movement on its own, and cannot gather its own raw materials from the environment to reproduce on its own.
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But, if you are talking about the idea of using tools, then it is a meme. Not the sort of meme like Nyan Cat, but a meme in the same category of permanence as the ideas of religion, culture, and other similar things. Meme theory treats these ideas as a sort of bizarre life form that uses humans as the medium of life, and that these memes can evolve like a virus does.
A very good example of a meme is language. Nobody is born with a language. Languages are spread from person to person through use. When a person is born, they eventually acquire a copy of the “English meme” (to use one language as an example). Just like no two organisms are never alike, no two people use the exact same version of English. Through communication with other English speakers, different people’s versions of English mix and “evolve” through innovations of language.
When two groups of people have more intra-group communication than inter-group communication, then it is possible for those groups’ versions of English to diverge, much like a species diverges when two populations are isolated. This diversion is slow, but is evident in the usage of the words “y’all” and “ain’t”. Since the American South is still connected to the rest of America, this is about as far as the diverging will go.
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When two competing memes come into contact, they can either merge, repel, or coexist, depending on the type of meme.
If the American South was suddenly as connected to other parts of America as it is within itself, the word “y’all” may disappear or become more widespread. Both indicate the merging of the dialects of English.
When it comes to religion, one religion will usually try to either convert or kill the followers of the other religion. All major world religions assert its superiority over other religions (even if it is not as violent), because all religions that didn’t were swept up by those who did. This is similar to the idea of natural selection / survival of the fittest, at least close enough that it is a neat comparison.
Most memes coexist. The ideas for mechanical pencils and printers coexist quite nicely. This is usually because the memes are of completely different category and thus can’t merge and will probably not have any reason to go against each other.
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The idea of tools is a meme. It spreads from person to person, and people can make different versions of tools, such as screwdrivers and power drills. Some tools out-compete others when a better version comes along. Many coexist. Some tools merge to create larger and more complex tools. Separated societies evolve different forms of tools. Different companies create slightly different versions of tools that are only slightly diverged from each other.
I think everyone can agree that tools have “evolved.”