Because it is just data display. A data display becomes a map when a human gets involved and performs a subjective interpretation on the data. The human thinks, and the thought goes on the map. As the Mapper interprets the cave, using notes, the traverse plot and memory, he or she creates through words and graphics an explicit document telling about the cave. The process is laborious, but the product communicates and explains, laying the foundation for future efforts.
Technology has the promise of reducing the labor of knowledge-creation in caving.
If a caver can quickly enter the results of surveying without tedious redrawing, then they will be encouraged to do so. We need to create tools that will reduce labor in maintaining collections of information, to allow rapid creation of documents. Functionality, not wizardry, is in order. Unfortunately, those who possess the talent to build such tools often know little of their use or even their history. Much effort has been expended in re-inventing wheels that have been rolling along for many years.