Chapter 2 Trivia

Lets get that fluid! #DrSTONE
The ultimate forager made sure to rinse the dirt off his hands before eating. Perfect stone world table manners!
Senku trusts Taiju's stamina, but obviously doesn't trust his identification skills. Senku had prepared a comparatively larger basket for the inedible plants before he'd even started sorting.
Senku uses the word "primeval" here, meaning "earliest time in history", which going by the previous chapter meant ~2M years ago.

In fact, proof of salt production only appeared ~6000BCE during the Neolithic period (=beginnings of agriculture rather than hunt&gathering)...
...which makes sense, because you'd want to preserve the harvest you worked so hard on!
Despite 2/3rds of T's previous haul coming back poisonous, he doesn't hesitate to try the grapes.

Why sour? It's October, the end of the grape harvest. Either the seasons are later, or, more likely, the grapes haven't gotten enough sun to ripen because of the forest canopy.
The only things Taiju and Senku have in common here are the fact they were both conscious and near a source of nitric acid.

I wonder if anyone else happened to have these extremely unlikely odds work in their favour...
Nitric acid made from bat guano doesn't drip from the ceiling. It's actually formed on the cave floor where the droppings can decompose into nitric acid, if it's kept moist. Normally it would seep directly into the rock layer, causing erosion.

This truly is the Cave of Miracles.
All the birds shown here are either in flight, or taking off. Could they have seen the beam coming, but no humans could? They all seem to be adults despite getting petrified during nesting season, where are the babies?

Do the eggs/embryos also get petrified?
The kanji on the bottle say "daiginjo," which is the highest-quality, premium grade of sake. To call your product daiginjo, 50% of the original rice grain has to be polished away (lesser grades require less polishing).
You can make wine like this but it's not recommended. I won't go into details, but 70% of fermentation is done in the first few days, and after those few days an airlock is recommended to not contaminate it. 3 weeks seems a little long for their method, but I've never tried!
Taiju has a cup, but Senku gets a clay wine glass? Why didn't Senku make a set for them? It's not like Senku can take advantage of any of the benefits of a wine glass in this situation.
It's been speculated that the Mesopotamians were using distillation for perfumes and aromatics rather than for drinking alcohol. Either way, distilling alcohol to drink only came about in the Middle Ages (~13th C) where, unsurprisingly, it was lauded as beneficial medicine.
Either the distilling setup broke a second time, or they decided to upgrade sometime during the winter.
Another early technique: ice fishing using a spear.

Evidence has been found showing this method being used over 2000 years ago by natives in North America. Improvements have been made over the years, but Taiju is shown using the most basic form of it (no bait or shelter).
Taiju seems to think Yuzuriha hates beards, I wonder if that's true...

I also wonder if Taiju will grow a beard again in the future or not.
If the whole bird species was petrified, that means this bird is the only one of its kind alive right now. Is Sparrow Ishigami ready to bring back all of sparrowkind?
Senku's comment here includes the 6 months he spent surviving alone, as it's only spring.

(Senku breaks out spring 5738, Taiju breaks out 6 months later on Oct 5th 5738. This scene is during spring 5739.)
Senku says Taiju can pick who they revive next, but there was really never any doubt. Yuzuriha is their mutual friend, and Senku doesn't seem to have anyone other than Taiju that he'd want to revive.

They also can't revive their parents...
End of thread!

I really love these early chapters where everything they do requires a lot of effort and it's all being shown.
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