Everything, that carries information from our head in the real world: calendars, notepads, to-do lists, a box for keys in the hallway, help us broaden our mind. For example, if you listen to the weather forecast and the announcer announces that it will rain tomorrow, instead of trying to remember to take an umbrella, put it directly at the front door. Now the environment reminds you of an umbrella. The bottom line is that all these pieces of information are fighting for space and resources in our head, knocking your thoughts. As a result, it is increasingly difficult for you to pay attention to what you're doing at the moment.