Its astonishing that even when its clear the players are not good enough, people still want yet another manager, who hasn't even had an opportunity to buy ONE player. There is also some irony because these fans will then criticize the board for making poor football decisions!
I do not know whether Ole will be a success or a failure, but absolutely no one can have an valid argument for saying, at this moment in time, that it is a mistake to appoint him.
Funny, this is pretty much what a lot of fans are saying regarding playing the youth players now like Laird, Greenword, Chong, Gomes and co from now on, even though, using your analogy, they are "in college learning the trade". Yet when a new manager arrives, no, he needs experience. This despite the fact that we've had three previous managers who have had plenty of experience and all three haven't done a good job.
Look people, this is NOT about trying to be right or wrong. Its just about giving a manager an opportunity to have a few transfer windows to see what he can do. You may be right. I may be right. Its irrelevant. What is important though is you don't hire someone, and then fire them, without giving them any opportunity to change anything.