This is How Mail Was Processed Back in 1970 Not sure why I was able to watch this whole video, I don’t feel any smarter or any better…but I loved it. Facebook Prev Article Next Article Machinery Checkout these cool gadgets... Related Posts These Airport Pods Simulate the Weather At Your Destination Interesting way to fix a dent – Miracle system demo Welding by Explosion Can Combine Any Metals Together Machine prints metal midair Levitating Quantum Superconductors This Crazy Shape-Shifting PC Is the Gaming Rig Optimus Prime Would Use