Learning is evolutionary. The way in which we learn is evolutionary and adapts to our environment. As educators it is vital that we harness technology and adapt it for educational purposes. For many this will require unlearning our traditional perception of how we approach learning in our classroom, and also as learners ourselves.

Educators begin the unlearning process by the how they construct knowledge.  typically this is done through professional development, and then apply it through practice. Application is the most important step in knowledge construction.  It is the time when you are able to be to take risks and be brave in our practice.  Humans learn from their mistakes, and it is ok to let our students watch us make mistakes.  In fact, it is great to model that you are willing to try something new and see if it works, if not, how can we improve it or make it better? Involve them in the process!! 
Ok, I got little overheated, but the challenge is, in my opinion, educators not willing to take risks.  The lack of technology in some districts is an obvious barrier, but if you are really passionate, you find ways around it.  Cynicism and fear hold back educators from providing effective, engaging, and current practices.