Architecture and Ambience:

The hall is spacious and dome-shaped, reminiscent of a traditional African roundhouse, but with a transparent ceiling that displays a live view of the cosmos or can project intricate constellations for a more immersive experience.

The walls are lined with sound-absorbing materials patterned after ancient hieroglyphs and Adinkra symbols, which not only improve acoustics but also serve as learning aids.

Seating and Accessibility:

Seating is amphitheater-style, ensuring that every attendee has an unobstructed view of the speaker. The seats themselves are ergonomic, made from smart materials that adjust to the occupant's body shape and movements. Accessibility is paramount; the hall includes features for individuals with disabilities, including sign language holograms and sensory-adjustable areas for those with sensory processing preferences.

Technological Features:

At the front, a state-of-the-art holographic podium allows speakers to interact with 3D models and data, making lectures a multi-dimensional experience. Each seat is equipped with a personal interface that allows attendees to engage directly with the lecture, asking questions or accessing supplementary material in real-time.

Interactivity and Learning Tools:

The hall's AI system is designed to facilitate dynamic learning. It can provide simultaneous translation, fact-checking, and even pose critical thinking questions to the audience. Interactive screens line the entrance, where attendees can browse upcoming lectures, view profiles of speakers, or access a digital archive of past presentations.

Sustainability:

The hall operates on sustainable principles, with energy harvested from piezoelectric floor tiles that absorb and convert the footsteps of attendees into electricity. The materials used throughout the hall are either recycled or sourced from the Blerdosphere's renewable resources, reflecting a commitment to environmental stewardship.

This lecture hall is not merely a venue for dissemination of information but a catalyst for innovation. It is a testament to the Blerdosphere's dedication to education, where every lecture is an opportunity to shape the future.