All the Ds

Dear All,

Had a chance to talk to Matthew recently and he introduced the Ds, all of them. Explaining 4D is okay, although 5D -in my opinion is part of the schedule, therefore integral part of the 4D, then 6D is more of a design concept, the 3D models should been designed accordingly, therefore it is an integral part of 4D, 7D is a totally different beast.....

Am I the only one having difficulties to capture the idea of all of these Ds? What is the message to convey to people when talking about such?

I appreciate your ideas about it.

Zsolt Putnoky