False results

[tj-commits]

is-plain-object is very useful, but I got false when I inputted a plain object. I am a plain person, so I thought if I inputted myself, it would return true. I put a USB cable and clutched it in my fist and plugged into my computer on the other end, then used the usb library to get the USB device which was myself, and called is-plain-object with it. I expected it to return true, but it returned false!!!!! I am outraged! Please fix this immediately.