• A Cell paper titled “Can One Concurrently Record Electrical Spikes from Every Neuron in a Mammalian Brain?” was shared, prompting debate on the feasibility of whole-mammal brain-scale electrophysiology.  
• Participants questioned whether dense electrode arrays are the right path, noting that optical tomography already achieves real-time, whole-brain activity imaging in zebrafish larvae (~10 M neurons).  
• The discussion highlighted the gap between imaging larval zebrafish and scaling to adult zebrafish or mammals, underscoring ongoing challenges in whole-brain recording technologies.  
• Two reverse-engineering write-ups were circulated: one on an unknown CPU from the 2019 Danish Defence Intelligence Service CTF (https://www.robertxiao.ca/hacking/dsctf-2019-cpu-adventure-unknown-cpu-reversing/) and another on the same Danish intelligence puzzle (https://safiire.github.io/blog/2017/08/19/solving-danish-defense-intelligence-puzzle/), illustrating low-level hardware-analysis techniques relevant to security and hardware hacking.