The most important invention in your lifetime is… The term invention has an interesting etymology, for the idea of merely ‘coming upon’ or even ‘discovering’ (taking a cover from something previously hidden under that cover) is a relatively passive idea compared to the concept of ‘creation’, although in practice it involves activity of an equal … More Try this for ‘significant invention’! LOL. The decay of the idea of ‘invention’ and making space in the cosmos for the  creative life-forces may be all that matters.