"In the case of a Lightsabre, there is prior art even if the device was never produced"
So we can throw this one out too then right? Startrek TNG had natural language queries in the early 90s.. then there's Scotty in the 80s when looking for whales... Keyboards being "quaint". If I wasn't half asleep I'd come up with a dozen more examples from earlier sci-fi. :)