When a band like The Pixies, with over three decades of history, music, and lore behind them, step onto a stage, it will either be spectacularly good or incredibly bad; there is no middle ground. When you’ve survived long enough to become otherworldly, you either rocket to the moon or crash to Earth. As they closed out Monday night’s show in the dark shadow of the Boise foothills, The Pixies sent us all into orbit.