Misquoting Star Wars to a child? Horrendous. He'll grow up saying it wrong and his friends will laugh at him. 
Other than that I don't really have a beef with the phrase. I quote all sorts of things whether or not I actually mean or believe them... "So's your face", for instance.
And I do have several distinct childhood memories of half-heartedly "trying" to find a lost item and coming back whining "I can't fiiiiind it" - I suspect it would have been very good for me to adopt a results-oriented trying-doesn't-count-find-the-darn-hairbrush-already philosophy. 
On a purely geeky level I'd also like to point out that Yoda's "There is no try" was meant to educate Luke on the non-importance of matter. Luke was "trying" to raise the ship - straining and getting all agitated because he thought the size of the ship made it harder to lift than the boulders. That wasn't the way. He was supposed to let go, let the Force flow through him and realise that "size matters not" - that's how Yoda did it, calmly and without apparent exertion. Again, possibly not the best message to teach your kid, but I don't think "there is no try" can justly be applied to piano playing. At least, not non-Jedi piano playing. ("Feel the Strauss!")

Other than that I don't really have a beef with the phrase. I quote all sorts of things whether or not I actually mean or believe them... "So's your face", for instance.
And I do have several distinct childhood memories of half-heartedly "trying" to find a lost item and coming back whining "I can't fiiiiind it" - I suspect it would have been very good for me to adopt a results-oriented trying-doesn't-count-find-the-darn-hairbrush-already philosophy. 
On a purely geeky level I'd also like to point out that Yoda's "There is no try" was meant to educate Luke on the non-importance of matter. Luke was "trying" to raise the ship - straining and getting all agitated because he thought the size of the ship made it harder to lift than the boulders. That wasn't the way. He was supposed to let go, let the Force flow through him and realise that "size matters not" - that's how Yoda did it, calmly and without apparent exertion. Again, possibly not the best message to teach your kid, but I don't think "there is no try" can justly be applied to piano playing. At least, not non-Jedi piano playing. ("Feel the Strauss!")






: And yes, it's a life philosophy, and yes, it's something we teach the kids to live by, and yes, darned right my preschooler watches Empire Strikes Back.




: geeks of the world untie! I am forever quoting star wars to DH (my favorite being "stay on target, stay on target" whenever he starts talking about some off-the-wall scheme he and his coworkers thought up. We quote SW, Fight club, and South Park a lot. Sometimes we say things to DS too.

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