To the best of our knowledge, history is fixed. No matter what we may have learned from a series of Michael J. Fox movies, it's impossible to go back and change anything. But history is also filled with events that could have easily gone each of several ways, with even the most consequential of them hinging on seemingly inconsequential details. The world of "what-if" has long been mined by historians, novelists and sports fans: What if the South had won the Civil War? What if Scott Norwood's kick didn't go wide right? What if Len Bias had lived? But there's no reason sneakerheads can't join in these exercises. Because there have been plenty of sneaker-related decisions over the years that could have had a significant impact on the present day. These are The 10 Craziest Sneaker "What-Ifs."