over a year ago, Rick Murchison once bubbled...
The "Hogarthian" gear configuration had simplification, streamlining, redundancy, elimination of failure points and a logical, easy to reach arrangement as its central theme. The DIR gear arrangement is a mature Hogarthian system that is standardized around the WKPP's refinements.
In other words, the DIR gear arrangement is Hogarthian, but all "Hogarthian" gear arrangements aren't "DIR."
Rick
Again, the DIR gear arrangement is one of many possible "Hogarthian" gear arrangements, so the DIR gear arrangement is a subset of Hogarthian. As Roakey says, however, "DIR" is much more than a Hogarthian gear arrangement, but a complete diving package that includes equipment, training, procedure and philosophy.Roakey once bubbled...
A simplifed, but still pretty accurate answer is that Hogarthian is a subset of DIR. Hogarthian is only about equipment configuration. DIR uses the basic Hogarthian configuration but builds upon it with skills, buddy awareness, fitness, dive planning, etc.
Whether DIR is the "one way" or not is another argument entirely, but its efficacy evidenced by its record is indisputable.
Rick (incidentally, I fall on the "one of many ways" side of that argument)