@Dr Thomas: if the technological apocalypse arrives, I doubt AR will be what we miss most :)
I agree -- survival will be first and foremost -- but...
We had some big storm shere recently -- on TV the local news was talking abouit possible tornadoes and plotting their courses and saying "Harvest, it will be hitting you at 6:22pm ... Monrovia, it will pass you at 6:24pm ... Hazel Green, watch oiut at 6:32pmmm...."
I can't imagine not having this data available. But a few years ago you wouldn;t even have known a storm wa scoming until it arrived. Once you get used to information it's hard to live without it -- that will go for AR also