This is the fun part. Try not to limit yourself and start with an open mind, do not judge the ideas during this stage



This section of the Double Diamond is where ‘solutions or concepts are created, prototyped, tested and iterated. This process of trial and error helps designers to improve and refine their ideas.’ (Design Council, 2015)


There are two key areas in this section:

Generating Ideas: This is the fun part. Try not to limit yourself and start with an open mind, do not judge the ideas during this stage

Evaluation: Once you have some promising ideas you can begin to trial some, and evaluate the successes of each one.


By the end of this section you should

  • Have a selection of promising ideas that you want to trial and take forwards

  • Have received feedback from peers or other members of staff

  • Have a clearer understanding of some of the constraints/requirements for your bright idea


As a result, you ought to end up with one or a small number of ideas you want to later prototype and test, in order to find the best solution to your initial question or problem.

There are lots of tools to help develop ideas, just remember to apply a mentality of

“yes, and…”. Let anything happen at this point and build upon each other’s ideas. Good luck.




Tools for idea assessment


Brainstorming & Brainwriting

Mind Mapping can be conducted individually to set out different sections that relate to your bright idea, and other ideas that could stem from this. You begin with your main idea in the centre of the page, then draw lines out with corresponding information, slowly building on each new branch until you have a multitude of ideas.

Brainstorming is best done in a group but remember to not judge the ideas at this stage. Instead build on individual ideas, expanding them further and exploring all possibilities. If you want a bit of guidance, here’s a link to help begin the groupbrainstorm

But it is also important to know how not to brainstorm



Fast Idea Generator

This tool developed by Nesta helps to generate ideas by looking at a problem or opportunity from a range of different perspectives. This leads to new ideas for potential solutions: 



Or if you would like to know more about the work that Nesta does and some of their other tools, simply click here 


Tools for idea assessment


Spider Chart

This tool is used for when you want to rate something with multiple variables. This is illustrated in the diagram below by Fusioncharts . In the example the person wants to rank their favourite beer on 8 aspects; sourness, bitterness, sweetness, saltiness, yeast, hop, malt and special grain. By using this chart the person is able to rate each element separately, whilst simultaneously representing the beer as a whole in an easy to understand format. 



To help decide on which ideas to take forward, click on the link below to look at some useful tools:



Dot Voting

Dot voting allows large groups of people to  vote on multiple ideas to determine which one is the best. As a group, create visual representations of each idea (an image, a description), and every member of the group go around and put a dot on the idea that they believe is the most promising. This creates a clear illustration of the ideas that hold the most appeal.




Impact / Effort Matrix

This tool developed by The Toolkit Project lets you categorise your ideas based on four key factors:

  • Quick Wins: The best ideas go here!

  • Major Projects: Further study is likely required.

  • Fill Ins: Probably best to avoid these.

  • Thankless Tasks: Further study is likely required.

Simply write down the ideas on sticky notes, then as a group decide where the ideas should be placed on the matrix.





​To learn more about this tool and The Toolkit Project click here





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