They are saying that the mother of invention is necessity. There is that to be real over my Forty years approximately of being an inventor. A way of putting it is; look for a need and fill it. Therefore the best time to consider an invention might be that moment http://eduardogtgs02580.getblogs.net/19995628/invention-ideas-for-students-and-the-way-to-come-up-with-fun-new-products