Posner's Spawn

No, not this fellow. This fellow. This new Judge Posner opinion contains an interesting and educational discussion of copyrights for co-creators, a comparison of equitable estoppel concepts in statutes of limitations to adverse possession of property, and descriptions of Spawn comics such as this:

"McFarlane’s original Spawn, Al Simmons, was a tall figure clad in what looks like spandex (it is actually 'a neural parasite') beneath a huge blood-red cloak, making him a kind of malevolent Superman figure, although actually rather weak and stupid." (from How Appealing)