Last week I met a colleague at Munkabeans Cafe & Coffeehouse on the beautiful Mainstreet in Hopkins, Minnesota. Of all the Main Streets in America, the Hopkins version is unique because they smash the two words together. Mainstreet. And a fine street it is, better than before, having been recently rebuilt and with some new businesses drawing me there. But there is just one problem. You have to apply to cross the street. After my meeting I was keen to visit Mill City Sound, so I set off on the four block walk. As it was bright but brisk, I…