SOFTWARE ENTRYPY:
#Smalltalk-80—236 classes
Cuis 7.0—675 classes
Squeak 6.0—2832 classes
Pharo 11.0—9986 classes
I miss those simpler days of #computing, back in the late 1970s and the early 1980s, when the #hardware #power was just high enough to do substantive work cheaply, and the #software #entropy was still low enough that one person could grasp almost any codebase in its entirety.