Things I Wish to Understand Deeply

Black holes as tools for quantum computing by advanced extraterrestrial civilizations - Gia Dvali, Zaza N. Osmanov
Using a black hole as a quantum computer — the most information-dense and fastest-scrambling processor physics permits.

An Integrated Brain-Machine Interface Platform With Thousands of Channels - Elon Musk & Neuralink
Direct read and write to the motor cortex (movement and skills), hippocampus (long-term memory), and Broca's area (language).

The Gravitational Field of a Circulating Light Beam - Ronald L. Mallett (2000)
Building a time machine out of a ring of circulating lasers — twist spacetime into a closed loop and step back into yesterday.