Jakob Nielsen, Ph.D., is a retired principal and co-founder (with Dr. Donald A. Norman) of the Nielsen Norman Group. Jakob established the "discount usability engineering" movement for fast and cheap improvements of user interfaces and invented the heuristic evaluation method.
Research and design go hand in hand and have staying power. Even as UX principles become more widely accepted, there is always more to learn and improve.
There is no excuse for not performing usability studies. They’re fast and cheap, and very convincing. Test with representative customers using realistic tasks, then be amazed by what you observe.
UX constitutes many different specialties such as researcher, interaction designer, visual designer, copywriter, and information architect. Forcing one person to do it all is a prescription for mediocrity.
Jakob Nielsen presents his UX directions for the future: How UX roles will evolve, and how UX involvement can solve major challenges for the world. (This was the keynote at the UX Conference in Las Vegas.)
The UX profession has grown substantially since 1950 everywhere in the world. Even so, the expected growth until 2050 will dwarf anything we’ve seen so far.