I'm not entirely against that logic, but the manager also has to play the long game. He can't treat every situation like it's the World Series; he needs also to learn who he can rely on in a long season and who he can't, and with luck also develop a young player by throwing him into the fire and (hopefully) have some success to build on. Gardy probably confirmed a suspicion, at a pretty high cost, and without anything to build on, in this instance. But to have a successful season the entire 25-man roster has to contribute, and especially in the early season you have to manage on that assumption, and let the outcome dictate what happens next. In other words, weighing the potential upside versus the very obvious downside, it doesn't seem like a boneheaded move to me.