from the out-with-the-old dept.
harrymcc writes "Three months ago, I started using an iPad 2 (with a Zagg keyboard) as my primary computing device--the one I blog on, write articles for TIME magazine on, and use to prepare photos and other illustrations that go with my writing. I now use it about 80 percent of the time; my trusty MacBook Air has become a secondary machine."
Computers are unreliable, but humans are even more unreliable.
Any system which depends on human reliability is unreliable.