"Even ideas that are excellent and will eventually succeed frequently fail when first introduced." #readingToday

Every modern innovation, especially the ones that significantly change lives, takes multiple decades to move from concept to company success. A rule of thumb is twenty years from first demonstrations in research laboratories to commercial product, and then a decade or two from first commercial release to widespread adoption. Except that actually, most innovations fail completely and never reach the public. Even ideas that are excellent and will eventually succeed frequently fail when first introduced.

Design of Everyday Things Revised, Don Norman