"So Index failed to recognize you after having her memories regularly erased."
"The reason you didn't acknowledge each other as companions this time was because you thought that Index's memories were going to be wiped again soon anyway."
"You thought that if you reunited and formed bonds again, you'd feel awful when it came time to erase Index's memories afterward."
"So this time, you protected each other through rather rough methods?"
"Hey, hey, hey, don't tell me you're illiterates who never even went to middle school?"
"Anyone who went to middle school wouldn't believe something like that."
"Right, Touma!"
Hearing Yuzhen's question, Touma Kamijo—who had been dragged off by Komoe for remedial lessons on the very first day of summer vacation—immediately put on an understanding look. "Mm-hmm, yeah, yeah, yeah. The brain's capacity definitely isn't that small..."
Seeing Touma Kamijo looking like such a hopeless student, Yuzhen sighed helplessly. "I nearly forgot. You're a textbook academic failure. Your scores are so terrible that Komoe has to drag you into remedial classes this summer vacation."
"Anyway, the brain's memory capacity is nowhere near that small!"
"The human brain's memory capacity is roughly between one quadrillion bytes, or 1 PB, and 2.5 PB—equivalent to storing about three million hours of video."
"However, memory isn't merely storage space. It relies on the dynamic connections and restructuring of neural networks, so its true capacity is difficult to quantify precisely."
"The formation of memories relies on roughly 86 billion neurons and around 100 trillion synaptic connections between them..."
At this point, Yuzhen saw that everyone was still completely lost and couldn't help facepalming. "Forget it. It's my fault for throwing too much technical terminology at academic failures like you."
"Anyway, you need to understand that human memory is divided into short-term memory and long-term memory."