exactly. People like to pretend that e.g. PEG grammars don&#x27;t have ambiguities because of &quot;ordered choice&quot;... But the truth is, they simply mask ambiguity away! Even yacc will <i>always</i> produce a valid grammar, resolving conflicts in a well-defined manner - while also letting you know how to fix your grammar to make it even better!<p>Edit: this is actually explained much better in the article.