Shut the front door!
The problem with opening a window is that it lets the wind in. The wind swirls into spaces you don't pay attention to, and soon everything once carefully categorized and organized is now dancing with barely controlled violence. It's a fucking mosh pit.
The wind picks up strength, it feeds, it grows. And it blows the door open. Now what's out is in and what's in is out. It's going to take a long time to re-organize and re-categorize.
Shut the goddamned front door. And don't you dare open a fucking window.