The 4th industry revolution is invisible, so we hard to explain what it means.

What is information society? it's main factor instead of martial and energy.

We have to get abillities which can make window function.

A few years ago, devolop skills mean increase our job, but from now on, develop skills mean decrease our job.

We have to try to create through thinking.

In the future, robots work our task instead of human because robot's judgment and skills are more elaborate than human.

So we must prepare completely about coming future.

We may have to fight robots to find our job.

Computer memorize the information, brain creates knowledge.