Product Managers must know how to say "No"
In the world of making things people want, it's really important to make smart choices with what you have. Imagine you're the captain of a ship (but instead of water, it's a ship of ideas). People around you suggest lots of cool stuff to add to your project. Some ideas are great, but you can't add everything. You have to be careful and choose things that will really make your project awesome.
Sometimes, you might have to say "no" to some ideas, even if they sound good. It's like when someone asks for a new toy, but you know they already have a bunch of toys that do similar things. You want to use your time, money, and energy on things that will make your project better and more special.
People will tell you their thoughts and wishes for the project. Some might be from your team, while others might be customers or users of what you're making. They might want new features right away, but you have to think about what's most important for the project's big goals. So, you might have to explain why you can't do everything they ask for.
Remember, things can change quickly. What's not right for your project today might be just what it needs in the future. So, you keep an eye on what's happening and be ready to adjust your plans if you need to. This way, you're like a smart captain, steering your project ship to success.