You are right. I know the paper well since I work in this area, and the article and summary are VERY misleading. Heisenberg's uncertainty principle is perfectly safe as originally articulated -- this is merely a rephrasing of it, and an extension of it. It is a nice paper, but I wish journalists wouldn't try to sensationalise things by saying Einstein/Newton/Heisenberg/CowboyNeal is wrong... Here, I suspect the authors are slightly to blame for this -- note the peer-reviewed article is much more conservative and careful than arxiv version (which is perhaps what led to the misleading popular science article): http://www.nature.com/nphys/journal/vaop/ncurrent/abs/nphys1734.html http://arxiv.org/abs/quant-ph0909.0950