This can really only work if we accept that some things will not change. Only software I know that did this is TeX. And it was deliberate there. He acknowled

This can really only work if we accept that some things will not change. Only software I know that did this is TeX. And it was deliberate there. He acknowledged that done things could be improved. Or just done differently. But, he made the choice that it is a foundation for a lot of other code, so bug fixes only. Edit: I should say explicitly that I agree with you. And I am interested in how this can be solved otherwise.