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Re: Time travel - It isn't possible because Time is a basic human concept. It is not measurable because it isnt an entity in itself. People have argued that it MIGHT be possible, but if you take the cause/effect scenario into the equation, it pretty much negates the whole idea.
Even if the Earth started to spin backwards (ala Superman) it just isn't possible to revert time to an earlier date.
On the tech front, computers definitely. And cellphones, PSPs, iPods and smaller handheld devices...alongwith DVDs, Blu Ray, huge storage devices like big-capacity HDDs...
Nanotech has certainly taken gigantic strides in the past 10 years or so. It is a boom of sorts, and there's plenty more to follow. Being a tech geek myself, I am happy to lighten my wallet to the self-indulgences of the latest technology.
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"If you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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