Sooo basically you can spell "you" correctly, but dare not attempt those all those added letters in "your" and "you're"?

That largely depends on the dog. I have a border collie. He's crazy smart, and he'll gauge if the consequences of an action outweigh the pleasure he'll get from that action. If he sees something on the counter that he can reach and eat, and it's something he really likes, he'll probably swipe it. I just keep food pushed back where he can't reach it (even though I KNOW he can get up onto the counter with all four legs if he wants, by jumping onto a chair, the table, then the counter - I've seen him do that, the first week we had him - now he'll only steal food if he REALLY likes it, and he can reach it from the floor). Problem solved. He's fine alone in the house for a couple of hours, but if we'll be gone a while, I crate him or gate him in my office, because he'll get into something when he's bored. He can sleep on my bed if I let him, but if not, he'll sleep in his crate without complaint. I got my dog when he was an adult, and he'd spent all of his life until then locked in a crate, and got into things because he was bored and looking for attention and exercise. He's way better now, but that doesn't mean he won't pick up a shoe and run off with it if he wants to play every now and then. No dog is perfect. No person is perfect. It's all about being able to live without conflict with your dog. That might involve some compromises for both of you. Generally, if a dog is getting into things, he's not getting enough exercise or attention.