This is an exciting new age with rapid changes. The frantic pace of change makes it inevitable that some of our knowledge or way of thinking becoming less relevant than it used to be.
Hence unlearning becomes more important, to let go of what you learned which allows you to see things from a fresh perpsective and more creative ways that could adapt to the current situation.
By this I do not mean forgetting things, but adapt unlearning as a mean to deconstruct your knowledge and views so that they are not fixated by the context of where you learned them from for more relevant application.
Which brings us back to the beginning, the importance of learning, so that we can unlearn.