[pherk]

> What if someone else has an important piece of information that the dev and the architect don't?

That isn't good enough justification. You are too much erring on the side of caution.

[vannevar]

But it's not costing me much. My devs still need to be in on planning their own work, and if they're all on the same scrum there should be a lot of overlap. Listening in on the planning for work entirely unrelated to their own should be pretty rare.