There is only so much you have the capacity to do. No matter how much planning, creativity, staying up late or amazing effort, you can only be in one place at a time, doing one thing.
Kids naturally know this limitation. They whine. They call, “Mooommmm”. They expect their things will be taken care of even though they don’t pick up, put away, clean etc… They say they are hungry and expect to be fed. They don’t plan. They don’t understand all the work a parent needs to do, they just want to play with that parent. They cry and expect to be picked up. They trust.