Phones which take pictures are only one modern example of things which serve more than one purpose; the Garlic-and-Butter-Bean Purée which can also be used for grouting the bathroom is another. Often, neither function is performed particularly well.
It is difficult to say whether this would have been true of the artefact recently discovered in south-western Germany, but anyway it shows that dual-use items were common 28,000 years ago. Such implements, or rather tools, must have been a real boon to the busy prehistoric man (or woman) who was suddenly struck by an urgent need to do a bit of flint-knapping, as they used to call it.
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