Sure, but water vapor doesn't spontaneously transition to a liquid and accrete onto surfaces - there needs to be a super-saturation of water vapor, and given the temperatures of jet exhaust, that's not trivial to achieve. However, the super-saturation needed for water vapor to deposit onto surfaces as ice is much lower, hence the preference for ice crystal nucleation.
Yeah I could distinctly feel my brain shifting into its adult era over the last couple of years (I'm 31)
It was kind of odd. I'm more serious now (but at the same time.. less?). I'm way more easily able to focus on what actually matters in this life. (In saying that, I think it's more likely that my brain has finally decided what's important... in a way I feel like a passenger)
I have the exact same feeling. Turning 30 was like flipping a switch for me. Since then, I've even felt like I've become more intelligent, especially in math. It's like everything suddenly clicked. I struggled with math throughout my entire school life, but now that I've gone back to college, I'm amazed by how easily I grasp concepts. I've recently taken on challenges that I always thought were exclusive to "smart people," like systems programming in Rust and Zig or building compilers.
In case it makes you feel better: I wondered the same thing. It's not explained anywhere on the blog post. In that poste they assume everyone knows how pricing works already I guess.
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