Originally Posted by alathIN

Until I was in my 20s, a phone was something attached to a wall and a cord and didn't do anything other than voice dialing. If someone called and you were on the phone, they got a busy signal. If you weren't home, you had no idea that they had called or what they called for. You had to pay extra to call someone outside of your immediate vicinity, and you had to spin a rotary dial to enter the number. Also, you had to remember all the numbers or have them written down somewhere.

Now I have in my pocket not just a phone, but a small touchscreen computer with access to pretty much the whole sum of human knowledge. Can communicate by image, voice, or text; synchronous or asynchronous. Plus run a whole host of computer programs, take pictures, take videos, scan bar codes, map my location on the surface of the earth and give me directions wherever I want to go. Stores all the contact information for everyone in my personal list, and can access same for just about anyone else who wishes to be available and some who don't. Oh, and most of the time it's completely wireless and I can take it just about wherever I want.

That's a breakthrough.

Agree silly to argue, though; we're just quibbling over the semantics of how big a change needs to be before you call it a "breakthrough."
I'm going to guess you're 30 or less. Live a little longer, you'll see some breakthroughs.