When it goes to the sale and your feedback is poor? Or better do a lot of trial runs in your house? It is obvious, but many times the answer is not that simple. There have been several success stories in the real world when finding a set of audiences was not at all easy to test your product. It might be due to several reasons. For example, a company that deals with making EEG recording electrode wearables for kinds and as much as infants will find it difficult to find volunteers to test them on. This is certainly challenging to find them in a diverse set of cases, further.
There are even simpler cases where you are building something for the first time. There are no or close to nothing as a guide to your new product. These are instances when you have the ability to put forth something that is of great use to the people and changes the way things have been used so far. The base of a great industrial design is the concept and the execution of that concept.When it is in the mind of an entrepreneur or an engineer, it is very clumsy. There are a lot of such things that occur and many of them are not feasible in the real world. The important part is to weed out those pretty quickly and efficiently so that more time can be spent on things that are actually important, such as, the modeling.
There might be hundreds of different ways
That you can do the same thing, but, choosing the best one out of them not just based on your biases, but on a general consensus is crucial. There are challenges from the engineering side, from the technical side, from packaging side, from the aspect of using it as a product it is meant to be and so on. These dictate the feasibility of the product. If it has to be used under the rain, in heat and under the ground at 200 feet, the things would be different totally. You cannot think of having a solar panel attached to the drive in that case just for the sake of novelty.Many times, the ideas to build great looking devices are met with constraints and deadlocks from a technical point of view. The actual design for manufacture does not meet the initial concept in mind, and that is a feasibility checker reality. It is the basis of everything from handheld computers to super-fast and lightweight thermometers.