Sometimes people ask me why certain themelesses run on Fridays and some on Saturdays. You can make a puzzle as hard or easy as you want by tweaking the cluing, right? That's mostly true, but there are some puzzles that just scream SUPER HARD VOCABULARY, I BELONG ON A SATURDAY! Today was one of them.

I like learning a thing or two from my crosswords, especially when the thing is a catchy as FLEXITARIAN. What a snazzy term! And it's something that solvers can suss out, even if it's unfamiliar. Fantastic choice to seed a themeless puzzle.
I'm a Carl Sagan fan — love "Cosmos" — but PALE BLUE DOT was new to me. As a former NASA intern, I'm embarrassed that I didn't know it until now. Ahem. Again, I like learning a thing or two from a puzzle. And although this one wasn't as easy to grok as FLEXITARIAN, it still makes sense (the Earth as a faint blue dot in the universe).
I wouldn't expect educated solvers to know details about Miss HAVISHAM (from "Great Expectations"), but the name ought to at least be familiar-sounding.
ANTENATAL … okay, NATAL should be figure-out-able, meaning "related to birth." And the ANTE- prefix means "before." But what an odd term compared to the much more well-known "pre-natal." Jill (my wife, a doctor), says it's not uncommon, but it's a bit odd in lay usage.
COLPORTEUR … whoa. It is a word in the dictionary. And it amusingly sounds like Cole Porter (no relation, unfortunately). Sure was tough to piece together though, requiring each and every crossing.
Overall, I think the puzzle was fair. The only crossing that gave me pause was COLPORTEUR / PALE BLUE DOT. GALE? HALE? MALE? The P seemed highly likely though.
Well, there was the CHARY (what the…!?) crossing ACE, which had a tough clue. [Crush] was right; the crossing nearly crushed me.
I think the best puzzles are the ones that 1.) teach me a thing or two (FLEXITARIAN!), and 2.) which give me a huge feeling of accomplishment, knowing that I beat it with 100% certainty. This one felt heavier on the former, lighter on the latter.
Still, a great mental workout, one that belonged on a Saturday.