Redactle

Right away this looks like something related math, what with the [█, █) and ~ ███(█).

I'm trying to spend a little less time on these, so let me try a few things right away:

So, the main thing we have to go on at first is punctuation. I notice the _._ in the bullet list about a quarter of the way through. There are similar _._______ blanks a few paragraphs later. That makes me think of numbers, so possibly a ratio or measurement.

"during," one of the free words, appears 28 times; that seems like a lot.

Then 1/3 of the way down, there's a bullet list with ~_ and _______ per ___, which again look like math and numbers.

So, my first wild guess is gravity, which is wrong but at least appears twice.