To me it seems like you can have a state of mind, and use that state to predict the state of mind of others without being _aware_ of your state of mind at the same time - that is, without being conscious.
In principle, yes. In practice, it would be much harder to rig a system that can be aware of others' states of mind without being aware of its own. Nature never does things the hard way when the easy way works. Consciousness is the easy way.