I’ve always been afraid of asking stupid questions. Silly, right? So I usually make sure I’ve done thorough research before asking a question when I get stuck. I also hate not understanding how things work. So I just try to figure them out. You should do the same!
Coupling is about how objects in your application are connected: which objects depend on which, and how does that affect the entire system’s stability?
An application has tight coupling when a lot of components depend on each other. This should usually be avoided because a change in 1 place can cause issues in any of its dependencies.
So what does coupling tell you about your classes?
When asked for estimates, you usually don’t have much more than your gut feeling to go on. You just know that this one thing is going to take longer because it’s more fragile than that other thing. But why is that?
People much smarter than me have researched this subject and there are good ways of measuring how complex a piece of code is.
If you’ve ever been far away from someone you want to communicate with, you’ll know how annoying daylight saving times & timezones make it to coordinate time across the world.
You don’t want your users to have to have to reason about that, so you’ll have to make your application do the work for them & display them the time at their location.
Dealing with time isn’t necessarily difficult, you just have to be consistent.