"A CONSTRUCTion that holds for two observers separately should hold for both" and must be rejected otherwise. E.g., Earthlings and Venusians may be consistent in claiming to be the center of the universe, but their claims fall to pieces if they should ever get together.
solipsism is similarly not maintainable when an observer invents another autonomous (
see autonomy, autopoiesis ) organism besides himself. The principle is neither logically necessary nor provable. In rejecting it, an observer is the center of the universe and
communication is essentially monologue. In accepting it an observer becomes part of a larger
system constituted by his
relations with others (after von Foerster). The principle leads to epistemological (
see epistemology )
constructivism . (
Krippendorff )
