Am So., 7. Feb. 2021 um 09:20 Uhr schrieb Manfred Bergmann <manfred.bergmann@me.com>:

But fundamentally, you also can’t create an instance of a class in Common Lisp from just the symbol. The class definition must be known.

This simply is untrue. You can use FIND-CLASS to find a class named by a symbol and then instantiate it.

-Hans