There are objects in the modern day Squeak image that were created when Smalltalk-80 was released. In fact, if you explore around Squeak's image, you can find all sorts of disconnected bits and pieces that nobody uses anymore, that are just along for the ride because they are in the image. Sort of Smalltalk pseudogenes. It's organic, very different, and to me as a biologist who likes to program, quite fascinating.