One can never know when technology will fail you - only that it is sure to fail at some point.

For a time I was in charge of training the new intel people that came to the unit directly from Intel schoolhouse. At first I had them prepare a brief on some topic and in the middle of delivering their brief I would turn off the computer running their powerpoint slides. I had them finish the briefing and, unfortunately, they usually didn't do too well. Next I would have them develop a briefing on a topic without the use of the SIPRnet or JWICs for research which got them acquainted with the pub library.

Technology can be a monkey on your back if you let it.