Most Important Technology

It's difficult to choose.
Because we have many technological devices or services.

But I believe that computer and internet are most important.
Almost companies use computer system to work.
My father said, "When I entered my company, only a computer in my office."

In Kevin's class, we are using lots of technologies.
Oral Class:Englishcentral, Youtube movies, etc...
Writing Class: MicrosoftWord, this blog, etc...
If computers and internet are gone, Can Kevin continue classes?

And also, VoIP tech is important.
Skype is great service, I think.