You're very right. We can never tell what will happen in the future and the impact technology will still bring to the educational sector. I still believe it's role in the educational sector will not be very prominent like in other sectors.Yes, it might be really difficult for robots to get replaced by a human teacher, but we may never know what will happen in the future. Around 15 years ago, there was no concept of E-learning, but now E-learning is quite common.