[DaveWM]

Haha looking forward to the competition ;). TaskDB sounds good, I'll keep an eye on it. Your approach to keeping the entire history of the graph is a good one, I'm using Datomic in Intention mainly for this reason.

I do hope DAGs become more commonplace, I think a lot of areas (e.g. project management) could benefit from using them.

[andrey_utkin]

True, I don't see why Intention and taskdb couldn't grow into enterprise, or groupware project management systems. Sometimes I'm even thinking about peer to peer exchange protocols for this kind of data (e.g. if your spouse or collaborator uses it too).