Over the last several years, some of the lines between technical and recreational diving have become increasingly blurred. Most recreational dive training agencies now offer some degree of technical scuba training, and the popularity of deeper diving has increased while the impressive safety record stays intact. Understandably, adoption of advanced diving techniques by non-technical divers is also growing. An example of this is the rising popularity of DIR. Short for "doing it right", DIR is a mysteriously hot topic in the dive world. Dive Web site messageboards are full of heated discussions about who's "doing it right", new tech and "semi-tech" products are being introduced all over the market and gas mixing fill stations are popping up all over.