–Jonathan Koomey and Nate Hultman"
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The problem with blackout is that the web drops. When web drops, everything else is 95% useless, no matter the batteries.
Even for work in SketchUp you have to be connected, else you can't get models from the web. Emails? Forget it.
On the rare occasion when that nightmare happens I get my fix from mobile browser which has it's own battery, to keep up with Gmail and to tell everyone I am back in stone age with old farts.
If there is a real (and expensive) need for web & pc, I use bluetooth and laptop to use mobile phone as a modem. It is slow but it works. Means a lot if you work in the cloud and program over the console.
"I'm growing older, but not up." -- Jimmy Buffett