There was a time when maglev was a theory - until it was tested, prototyped, and implemented. Let's wait and see. If we said "but it's never been done!" to ever

There was a time when maglev was a theory - until it was tested, prototyped, and implemented. Let's wait and see. If we said "but it's never been done!" to every new idea, we'd be lacking a lot of interesting/important thing.