Assuming that this is spectator mode and I can't inadvertently change history or die while I'm back there, I think watching the Chicxulub impact which killed the non-avian dinosaurs would be a pretty awesome spectacle.
this post was submitted on 16 Apr 2025
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Oh good call! Bring a torch it may get dark.
Assuming some sort of immunity, I would watch the big bang. Sure, most of it will be over before my brain even knows it, but then really cool shit will start happening I hope
Bing Bang Burger Bar, as opposed to the Restaurant at the end of the universe...
I think that would be impossible to observe it tho. Like there was no "space" outside of it to be able to observe it. As crazy as it sounds, the "void" we call space was created with the big bang.
- Not a physicist
Given we are discussing going back in time 13.8 billion years, and being immune to any negative effects, I think we can go ahead and say that part is figured out by the magic time machine as well.
"being outside spacetime" is probably fine.
Also not a physicist either but that is my understanding as well, there was nothing, no space, no time, no up/down/left/right. And space is still expanding (albeit unevenly) all these billions of years later.
What's it expanding into? Nothing! At least as far as we know. Still waiting to bump up against the next universe bubble.
"Would you care to join me in watching the supernova? It is a once-in-a-lifetime experience."
I would try to coordinate with linguists and scholars to find out more about language isolates. If everyone can do it, we could train everyone and go at 20-to-50-year intervals and solve some linguistic mysteries (specifically Japanese (current and peninsular) and Korean; Ainu origins; yayoi origins; jomon origins; etc.)
Can you explain what the mysteries are?
A very TL;DR version of some question:
Do any of the 3 have any other relatives (some conjecture that Japanese and Korean are related, Ainu may have had other relatives maybe something before Nikvh, and we have no idea what the original settlers to Japan (some of whom likely came from Taiwan but others from other places) spoke).
Was Peninsular Japanese a thing (we only think it exists because of some placenames in old Korean and/or Chinese documents). If so, was Japaonic pushed off the peninsula or was it brought to the peninsula?
What was pronunciation like of any of these languages in antiquity? We have some ideas, but it's not as clear-cut as, say, Chinese which can be studied by things like rhyme dictionaries.
Of course pronouncing things must be really hard to work out! I'd never thought of that. That's really interesting thanks for sharing
Dinosaur!