And students asking "why" is a taboo in current educational model.
That's simply not true for the most part. Sure, some professors don't like to be questioned, but most do try to encourage this. Almost every educator I've had or worked with wants students to ask the hard questions because it generally shows that they're listening, learning, and thinking.
That's funny, they seem to have been working fine for hundreds of years. I know they worked fine for me, even if they were a bit boring at times.
Seriously, though, at the end of the day, no single system will work for everyone. Many colleges have tried different educational models. Many of them failed, and those that survived mostly went back to the traditional model for a reason: it works.