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Krauss ultimately tackles the age-old assumption that something cannot arise from nothing by arguing that not only can something arise from nothing, but something will always arise from nothing.
Not really. The energy density of vacuum energy is apparently so low as to be useless on the scale of the Earth. It only adds up to something significant on a cosmic scale, and this is a reminder of how insignificant the Earth is on that scale. So if vacuum energy enthusiasts looking to lower their electric bill get a grip on this, they will no longer be very enthusiastic.
Originally posted by MrSpiderMonkey
For the zero point energy enthusiasts this might be inspiring.