Imagine you wake up in a room with no doors and no windows. You are lying on a stone slab of a bed that meets the floor seamlessly. The room appears to be carved out of a single piece of stone that looks like granite. The room is quite large, many hundreds of feet long and about twenty feet high. An eerie glow emanates from the stone, in a manner that appears to defy your understanding of light and electricity.
As you stand up and explore the room’s contours, you grow increasingly alarmed about your predicament, realizing that there appears to be no way for air to circulate from outside into the room. How on earth did you get in here and, more importantly, how do you get out before your oxygen runs out?
Hold that thought.
Who wouldn’t want to live forever? Who would?
This is largely an academic debate for now, but perhaps not for long. We seem to be at a point in our technological and medical knowledge where some type of physical immortality may become possible in a couple of decades or so. But there are many paths to immortality, some of which are here now.
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