Mon. 09/28 - Time Travel, Biomedical Tattoos, & Satanic Tea
Cool Stuff Daily
Reggie Risseeuw and Marques Pfaff
4.6 • 739 Ratings
🗓️ 28 September 2020
⏱️ 19 minutes
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Summary
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| 0:28.7 | welcome to the cotkey ride home for for Monday, September 28th, 2020. |
| 0:40.6 | I'm Jackson Bird. |
| 0:42.3 | An undergrad has proven that paradox-free time travel is indeed possible. |
| 0:49.0 | If you thought email newsletters were ubiquitous now, Let me introduce you to the world of 1930s |
| 0:55.9 | mimeograph newsletters. The emerging field of biomedical tattoos and the satanic tea company |
| 1:05.5 | here to bust stereotypes. Here are some of the cool things from the news today. |
| 1:19.3 | An undergraduate at the University of Queensland has apparently proven that time travel without paradoxes is possible. This is from a new paper published last week in the journal |
| 1:24.9 | Classical and Quantum Gravity by the student Jermaine |
| 1:27.8 | Tobar and his professor Fabio Costa, quoting popular mechanics. The math itself is complex, |
| 1:34.3 | but it boils down to something fairly simple. Time travel discussion focuses on closed time-like |
| 1:39.6 | curves, or CTCs, something Albert Einstein first posited. And Tobar and Costa say that as long as just two pieces of an entire scenario within a CTC |
| 1:50.1 | are still in causal order when you leave, the rest is subject to local free will. |
| 1:56.8 | Our results show that CTCs are not only compatible with determinism and with the local free choice of operations, |
| 2:02.6 | but also with a rich and diverse range of scenarios and dynamical processes. |
| 2:07.6 | Their paper concludes, end quote. |
| 2:10.6 | In other words, stepping on a butterfly during a dinosaur hunting expedition would not entirely change the present world you return to. |
| 2:18.5 | And the way Marty McFly prevented his parents from meeting or accidentally left behind a sports |
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