In the end, we can know only so much. That’s why when we try something new, we often don’t know what the end result will be. While we can certainly expect a certain result, we’ll never know for sure what will happen until it does.
There’s nothing wrong with this, especially if you work in product fulfillment. In fact, it’s likely a good thing that you understand that not everything you do for your business will be successful. There will be failures, and you will have to do a lot of learning from your mistakes.