Timeline for How to test a time machine?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 30, 2018 at 10:49 | comment | added | Rakesh Gopal | Multiverse exists: If I see a paper when I open it the first time, I then decide not to send any papers into the past and destroy the machine immediately. If I don't see a paper, I then send papers one minute into the past. So, not having a multiverse will lead to a paradox. Even before you start the experiment. | |
| Dec 13, 2017 at 23:57 | vote | accept | Green | ||
| Jan 9, 2017 at 23:51 | comment | added | Samuel | @Sam Wait. I now remember having this conversation, back when I went by Sam. I remember that the valid argument was if you're not in a multiverse, whatever delays occur are in the history of the number you received in the past. Then I remember you/me agreeing to that. | |
| Jan 9, 2017 at 23:46 | comment | added | Samwise | @Samuel but wouldn't that mean that the number would be different depending on whether you read it or not because you sent a number and then before you sent it you noticed something was different and that caused you to send a different number... time travel makes my head hurt. | |
| Jan 9, 2017 at 23:38 | comment | added | Samuel | @Sam Wouldn't that time difference be accounted for in the number that came back from the future? | |
| Jan 9, 2017 at 23:35 | comment | added | Samwise | @Samuel That's what you think... Muahahaha. But seriously though, merely the act of knowing that there's a message from the future in the machine could subtly alter the time at which you sent it and as true random numbers are time dependent (i.e. they change as time goes on) any change in the delay between telling yourself you're going to send a message and getting the random sequence will change the sequence you get so you probably could get a different sequence without A multiverse. The only way around this would be to get the random number first and then send it, dodging a paradox. | |
| Jan 9, 2017 at 23:08 | comment | added | Samuel | Why can you not read the received digit sequence before sending? The random number isn't influenced by your knowledge. | |
| Jan 9, 2017 at 22:59 | history | answered | jose_castro_arnaud | CC BY-SA 3.0 |