[MUSIC] So we're going to tackle food packaging. And in food packaging design, you want to use as little material as possible, ideally, recyclable materials. And of course you want to protect the contents of your packaging for as long as possible. We're going to tackle this using the TRIZ Contradiction Matrix. And when we're using the TRIZ Contradiction Matrix, we're looking for an improving parameter and the worsening parameter. In this case our improving parameter might be the duration of action of the stationary object, the packaging, and our worsening parameter might be the quantity of substance. And you can actually see these in one of the left hand columns on your charts. And the left hand column signifies the improving parameters. But the numbers corresponds to the worsening parameters along the top round. So if you can find the intersection between our improving parameter, which is row 16, and our worsening parameter, quantity of substance, column 26. That will help us identify the principles of invention, the TRIZ Contradiction Matrix is just into us. And I think in this case these are principles 335 and 31. And the order is important, because the order gives an indication of the priority with which we ought to try and tackle our challenge with. And the order is suggested in the TRIZ chart, it gives an indication of the order of significance that previous challenges have been addressed using these principles in the most effective manner. So in this case principle three stands for local quality. Principle 35 is the transforming the physical or chemical state of an object. And principle 31 is the porous materials principle. So what we're going to do is we're going to tackle this challenge using these principles and see how we get on. So over to you, grab a sheet of paper. Let's write draw using these principles. You can use the sheets as prompts. And you just have a go with the recommended principles. We know the principle names, local quality, transforming the physical or chemical states, and porous materials. Local quality, with this principle it may not be assumed the current use or location of parts in the system cannot be changed. Local quality involves identifying specific parts and changing or moving them so that they can operate at optimal conditions. This may involve changing an objects structure from uniform to non-uniform, or making each part of a system fulfill a different or complimentary function. Transforming the physical or chemical state of an object principle, principle 35, this involves altering an object in some way such as changing its temperature. The concentration of compounds or its density can sometimes provide overall benefits. Principal 31, the porous materials principal allows some substances, a porous material allows some substances to pass through it while filtering out or blocking others. This principle can be useful for separating or filtering out undesirable items or substances and it involves making an object porous or adding porous elements. Or if an object is already porous, and this is undesirable, filling the pores in advance with some kinds of substance. So these are the recommended principles from TRIZ. We're going to use these to see if they're useful in some way for our challenge of food packaging and ensuring the function and recyclability of our food packaging. Now we could spend ages on this, and a lot more time, but I'm just going to interrupt us now and just see what ideas are emerging. So maybe just take a look at your sheets and maybe pick one idea you might wish to share. Okay, so we very quickly grab hold of the TRIZ Contradiction Matrix which has prompted us with some principles to consider, probably principles that we wouldn't have gone to immediately. Yeah, we could have gone down the whole list and looked at them and tried them one by one. But what the TRIZ Contradiction Matrix does is it guides you using previous experience from equivalent challenges to really horn in on some suggested principles to try. And that's what you've done. And it seems like you've come up with some quite interesting ideas already. So thank you very much. [MUSIC]