I was talking about the scale of the solar system with one of my kids and I wanted to find a picture of the Sun taken from Voyager to show how small it was.  I came across this picture.

1970's technology meets 2007.

1970's - Voyager:
Here we have one of the shining stars of the NASA space program, Voyager, sending back to Earth a composite picture of our solar system with all the planets out to Neptune captured in one amalgamation.

Brilliant.

2007 - Google:
And here I am able to go clickety click click and view the fantastic image on my own machine.

Also brilliant.

The vast store of all knowledge that is available to any person with an internet connection is immense, ubiquitous, stupefying and already taken for granted. 

My kids will never know anything different.  Will they ever have the need to open a printed encyclopedia? 

Will their research ever involve going to the school library "stacks" to find a specific tidbit of knowledge squirled away on page 743 from some obscure research scientist from Peru?

Will they even have the need to learn the Dooey Decimal System?

I would argue "no" to all three of those questions.