> Choose books your students can read and understand.
A noble and audacious goal.
> If you can’t find one,
Realistically accessed.
> write one. It’s not that hard.
WTF?
Ok, I can see how this could be either plausible, or utterly absurd, depending on the domain.
> check whether they understand.
Err, does this mean "I think they didn't do too badly on the midterm"? Or daily quizes and clicker questions? Or a grad student, with a focus on the field's education research, dedicated to running concept inventories and stats?
At least in college introductory science education, "check whether they understand" is hard, an area of active research, and historically, a cesspit of professorial self-deception.
> It’s not that hard.
Let's draw a proton. With marker on whiteboard, as a circle (not hard). With an illustration app, as an arbitrarily-sized hard sphere with physically-bogus lighting (not hard). With code, as a gradient, based on the proton mass density curve (not hard, but did eat some hours).
Let's draw atomic nuclei. As balls of red and blue marbles (not hard). As gradients, post-processing from recently published ab initio density functional plots, when available (hard). Background: light nuclei are lumpy.
Ok, so let's aim lower.
Let's draw the Sun. As an arbitrarily colored circle (not hard). What about as a circle, with a color at least vaguely realistic? Demonstrably hard, as it's so rare. You likely can't ask your first-tier astronomy graduate student to do it.[1] Or almost any of the professorial authors of the many introductory astronomy textbooks.
Ok, so let's aim lower.
Last week I was reading an AP Chemistry curriculum standard. Towards the top, "atoms are conserved". Great. Later on, "atoms are neutral"[when charged, they're instead "ions"]. Okaaaaay. So are there any atoms on the right side of H + light -> H+ + e- ? The old "molecules aren't made of atoms, they're made from atoms" school. Two historical threads of definition. Left for students to reconcile, because that's obviously where the burden should lie. And this wasn't Pearson trash content, this was a curriculum spec (albeit a poor one). So what do you tell your kids to make it safe for them to take standardized exams?
"[N]ot that hard." I know wizzy education-focused MIT and Harvard professors who work really hard to raise some small bit of intro physics and biology content from wretched, to very-slightly-less-wretched.
Perhaps for some domains "not that hard" is true. And it helps if the objective is "no worse then the rest of the crap out there". And if "check whether they understand" means "ask a few clicker questions, and give a random quiz" instead of "systematically run formative misconception checks". But, wow. It so doesn't match the areas I'm most familiar with.
Perhaps the manifesto is missing some scope-of-applicability predicate?
[1] http://www.clarifyscience.info/part/MHjx6 "Scientific expertise is not broadly distributed - an underappreciated obstacle to creating better content"