A fun challenge for you on this otherwise normal Thursday afternoon: Try and make it through this five-minute video of The Witcher star Henry Cavill building a computer from scratch while wearing a tank-top without whispering "oh my goodness gracious" to yourself like a 1950s housewife seeing Elvis Presley for the first time. It sounds easy until the moment you realize the pieces of fresh-cut oak holding the various parts are in reality Henry Cavill's forearms. You can't do it. I can't do it. It's a scientific impossibility. Nine months from this video'…