"Do or do not, there is no try!" — Henx
Gotta love Yoda. He nails it. Consider the context of the quote: Luke is whining and crying about how hard it is to raise the X-wing out of the swamp. And he tells Yoda that he will try, enter Yoda's quote.
Luke doesn't believe he can do it, the whining makes that clear, and uses the word try as a cop-out, thereby admitting defeat even before beginning. I do not "try" to shovel the walk. I shovel the walk, no excuses, no whining. My kid (even though I love him) "tries" to do stuff that I tell him to do, stuff that he does not want to do. If he says he will "try" then I know he will be less successful than if he says "ok". Usually "try" is used as a preemptive excuse for an anticipated failure.
Intentions are based on an anticipated or desired course of action. I intend to go to law school (mostly because I get bored easily and maybe, just maybe that will occupy me for a few years), however I have not yet applied. I have, therefore, the intent to go, meaning I want to, but have not tried to get in, as in have made no meaningful movement towards getting admitted. I have taken the LSAT cold, but have not sent in any application to anywhere. I can use excuses like I can't really justify the cost of law school to appease my boredom, but in fact, I have not tried getting in yet.
Intention does not require action or movement, it is, paradoxically, a static activity.
Trying involves action or movement, and is not a static activity. Using it in a future tense "I will try" is regularly associated with anticipated failure.
Action/effect is not always the result of intent. You intend to get to work on time, you drive quickly, perhaps over the speed limit, perhaps not, regardless, while rounding a blind corner you run over a deer. End result: you killed a deer and wrecked the front of your car. Which is neither your intent nor what you were trying to achieve. Intent: don't be late. Try: to get to work on time.
If you swap out a person for the deer you have a crime without without intent, hence Negligence causing death, instead of murder.
As far as the expression "at least you could try!" one could replace "try" with a " verb" and the expression would be almost identical. " I can't find a job...At least you could look!" etc.
Thanks for posting eh!