this post was submitted on 17 Nov 2023
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139
Would you choose invisibility or teleportation? (lemmy.blahaj.zone)
submitted 1 year ago by hungryphrog@lemmy.blahaj.zone to c/asklemmy@lemmy.world
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You could turn invisibility on and off as you like and there would be no time limit. Your clothes would turn invisible too, and you could decide whether the items you are holding would be visible or not.

There would be no limits on how many times or where you could teleport. The items you hold while teleporting would be teleported too. You would also have the ability to know if the place would be safe to teleport to, so you wouldn't teleport and get impaled by an icicle or teleport inside a wall and get your insides filled with concrete or something.

Personally, I don't know which one would I pick. Invisibility would be awesome for pranks and stuff, but teleportation probably would be more useful for everyday life.

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[–] victorz@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

I think the point I was trying to make was that the lifetime of the photon is nonzero to us, from our perspective, but zero to the photon, from its perspective. All of its energy is in its velocity.

Remember in Interstellar when they slingshot around the black hole and it cost them like 80 years or whatever? The time around them went by faster as a result. Well a photon going at c would see time around it going by at max time speed as well, so it would arrive at its destination immediately after it departed. (From its perspective.)

That's how I understand it.