inve イディオム

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necessity is the mother of invention

our needs cause us to invent devices, build a better mousetrap Do you think the invention of TV proves that necessity is the mother of invention?

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Necessity is the mother of invention.

The need for something forces people to find a way of obtaining it.

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Reinvent the wheel

If someone reinvents the wheel, they waste their time doing something that has already been done by other people, when they could be doing something more worthwhile.

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invent the wheel

invent the wheel
see reinvent the wheel.

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inventory

inventory
take inventory
1) to make an inventory of stock on hand
2) to make an appraisal, as of one's skills or personal characteristics

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reinvent

reinvent
reinvent the wheel
1) To do something again, from the beginning, especially in a needless or inefficient effort: “School districts need not reinvent the wheel every time they try to improve their schools” (Washington Post).
2) To recast something familiar or old into a different form: “Call it reinventing the wheel or recasting old ideas, but these contemporary versions have a spirit and style all their own” (New York Times).