I don't think there's any need for fancy technology or magic ***. We already communicate enough, even if it's slow or we're not forwarding messages to each other, we still communicate when we want something, and that want is often driven by others wanting something off us, so the economy's clunky mechanisms of invoices, advertising, writing cheques, doing work, etc are communication channels between "neurons" which make simple individual decisions.
I disagree with that. But then, so might anyone who's been hounded and threatened for many months to pay a gas bill of someone with their name, but an address they've never heard of. In cases like that, all the evidence in the world is as much use as King Canute. The 'clunky mechanisms' just march blindly on. Unless, of course, one pays a literally extortionate sum for the services of an expert 'clunky mechanisms' analyst, i.e. lawyer. No, bring on the Vulcan mind-melding. Or something.
