It was a weasel.

Seems to be easier focusing with the calcite as well as durability in the scratchy sand environment.

Additionally, more derived/later species had aspherical lenses to compensate for the spherical aberration and dual layer organic→calcite lenses to allow for more of a refractive gradient to counteract the double imaging of calcite alone.

Modern arthropods probably done use it on land because of an inability to accumulate it in an efficient manner. Water arthropods like crustaceans probably done because it's metabolically expensive to do these things when chitin alone can make for useful eyes.

Evolution is more of a "good enough" kinda situation.

From my searching, it would seem that trilobites used calcite to reinforce their hard parts as well. Crustaceans have amorphous calcium carbonate reinforced exoskeletons through mineralization, but no calcite land arthropods do not seem to have this mineralization tho.

I'm no expert. Just like using Google Scholar to answer questions I find interesting.

Chitin.

Finally settling the old "Do cat girls have 4 ears or 2?", I guess.

Elonia Trump.

Because it's mostly titanium white...

Kinda like the instant coffee my grandma uses. For some reason it has no nutritional information on it at all. Not even caffeine content.

Where does instant coffee fall in this paradigm?

Didn't Hitler kill the other popular Nazi leaders because he feared their ability to take over the party?

That will be a fun day of news.

Twitter dies when advertisers realize there's no money in paying to advertise there. The moment it becomes more advantageous to pay for the ads somewhere else, it collapses.

One of the twilight movies. In a flashback, they show the Volturi massacring a group of vampires in which one of them had converted a child. Being a child when turned made them have no regard for secrecy or discretion, which would have led to them exposing the existence of vampires.

Which is why they were all coming to kill the Cullens when the mortal Bella gave birth to Edwards half vampire offspring, as another vampire saw a young girl with vampiric powers, not understanding that the half vampire girl would age rapidly until adult and then staying adult for eternity.

My summary may be slightly off. I read the books like... 16 years ago? Idk.