But sometimes one changes into the other: asking how to implement an Enterprise XML-Event Dispatcher Pattern Factory Framework in Powershell can lead to programming veterans to muse about the good ole times when the internets where still made of wood.
And that is precisely what I like about DC: there are still humans interacting with each other normally and freely.
While I often turn to SO for answers that other people must have asked before, I also see it as a "give me answer or give me death" sort of thing. It is focused so much. As this model works extremely well, I don't see how to combine SO and DC.
Say for example we move to have the Q&As on donationoverflow.com, and the nice discussions on good ol DC: it would need discipline (where to post this?). Even when there is a supposedly easy linking system like
[DC]post-id on donationcoder[/DC], [DO]post id on donationoverflow[/DO] between those two sites, it would make work.
However! I think it is worth trying! We could have non-programming questions only: how to herd ducklings, how to make the best Schwarzwälder Kirschtorte, I have a knife and an old hose: how do I make a solar panel out of it...
So while I am skeptic I don't see the experiment as a waste of time