My head hurts processing how it's possible to put so much storage there. If you strip away the protective plastic and other non-storage components, how much ph

My head hurts processing how it's possible to put so much storage there. If you strip away the protective plastic and other non-storage components, how much physical space is there? Also, new spec sets the ceiling at 128TB. 128TB! I'm guessing there will be another format before we ever reach 128TB, but still. What an amazing time we live in. Btw, 400GB one is $53 on amazon.