Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_4 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8K2 Safari/6533.18.5)
The Point is you think people would know the difference. That is a socially degraded self confidence issue and nothing to do with Siri. Siri is an assistant. Would you be embarrassed talking to a human assistant on the phone? Again it seems like a personal issue and a deficiency of social confidence.
I think that's a bit over the top. You forget that when people talk to A.I., at least for now, they tend to use better pronunciation than usual, also talk slower etc. So I'm pretty certain that I can immediately understand if you are talking to your brother or to Siri. So talking to Siri in public is going to sound like you are talking to a half deaf person, or talking to a retarded person. Even if Siri does not need to be talked that way, that's what people are going to do at first.
If you could talk to it as naturally as you talked to an actual person, then almost all issues brought up in this thread become irrelevant, except dictations maybe.
But in any case, it's not that simple as lack of social confidence.