Wandering around an atemporal structure that flickers unpredictably in this way between reality and potentiality is a real challenge to understanding. Some participants seem to be engaged in constructing a roof in the absence of any substantive walls to support it. Marvellous windows seem to lack any support and yet let in light of unforeseen quality. And, as in the most famous Escher drawings, stairways to higher levels often seem to lead paradoxically back to their starting point, defying any normal sense of gravity in the process. Arguing in circles then takes on new meanings.
Most confusion seems to lie around the nature of the keystones on which any such edifice depends.
It is another to find the form through which such knowledge structures can be meaningfully related to others to bear a load at a higher level. This is the challenge of conceptual scaffolding. Again, some participants have an almost mystical approach to the substance and design of keystones, others lapse into technicalities that fail to arouse confidence elsewhere. There is a sense that much work remains to be done. Most challenging to the unwary is the apparent ability of some participants to work on higher floors of the structure when the lower levels do not yet seem to offer any substantive support.