IAF Methods

NUF Test

by for . Last edit was over 2 years ago
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A technique for making decisions 

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Use the NUF test when you want to quickly check that an idea that has been selected is likely to be effective and work in practice.

Use it when you want to identify what to work on: being more creative, developing the idea or getting something that you will be able to implement.


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    A solution to a problem can be assessed and scored with the simple three-part 'Nuf test'. 

    Just score it from 0 to 10 on each of 'New', 'Useful' and 'Feasible'.

    New: not been tried before
    A solution is not creative unless it is new. When we say 'new' here we are not looking to get into philosophical arguments about original thought, but we do mean something substantially different from those things which have been tried before.

    Useful: solves the problem
    It is good to have a creative new solution--and it is even better if it solves the problem! The question here is 'How completely does it solve the problem?' A totally useful solution solves the problem completely--and does not create any new ones.

    Feasible: can be implemented in practice
    If you have a really novel solution that fully solves the problem, the final question is 'Can it be put into practice?' If it is really expensive to implement and difficult to use, then it will not be a very feasible solution. Another good question here is 'Who will I have to persuade?'


    Usual or Expected Outcomes: The NUF marking is a very simple quick check that you can use. It works because it is easy and intuitive, the criteria are already selected and there are only three of them.

    Examples of successes and failures: An idea for keeping a door open is to use a sucker attached to the wall that sticks to the door.

    Criteria Score Comment
    New 7 Similar ideas have been used before
    Useful 5 Not sure if the idea will hold well
    Feasible 9 Cheap and easy



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    • Could use this with a matrix on the wall, like the NAF method.

      over 2 years ago