Does the prohibition against issuing a halakhic ruling in one’s teacher’s presence still apply today, when halakhic books are readily available?

This source-based Torah study examines the question: Does the prohibition against issuing a halakhic ruling in one’s teacher’s presence still apply today, when halakhic books are readily available? The canonical Hebrew article develops the issue through the weekly Torah portion and the sources cited there. This localized discovery layer preserves the question and the source identity; it does not add any new halakhic, medical, legal, scientific, historical, theological, or empirical ruling or claim beyond the canonical Hebrew source.