[r2dnb]

> They force an idea in the mind to become concrete and logically digestible to other members of the party.

You make a very valid point, what I was highlighting is that good communication can be achieved without whiteboards too.

I understand your underlying argument that whiteboards may constitute the best technology, but I also think there is a tacit convention at play here. People tacitly agree to communicate in a way that make whiteboards work. For there are many effective and fluid ways to iterate on ideas that do not involve live drawings or complex tech.

I know it for a fact as drawing my thoughts on a whiteboard has always been counter-natural to me. I can do it but I wouldn't say that it is necessary for good communication. It is just a communication choice that people make.

Everything that can be drawn clearly can also be written clearly (analogies, bullet point lists for flows, etc...). Not to say that diagrams are never helpful, but it may be a stretch to assume that drawings and whiteboards have an almost essential role.