In Windows 8, when you delete a file, it no longer asks you whether you're sure—it just sends the file right to the Recycle Bin. This was an option in Windows 7 as well, but it wasn't the default—and if you'd rather have that extra safety net, you can easily bring the confirmation dialog back. Just right-click on the Recycle Bin, choose Properties, and check the "Display Delete Confirmation Dialog" box.