Yeah, this was a bug I accidentally seem to have introduced a bit ago. I apologize. The correct ratio I wanted to use was the one that Tufte CSS uses, which is 21px size to 30px height, which is a much more reasonable ratio. (This will be fixed in the next few days)
Correction: the body text has font size 19px, line height 32px (ratio of ~168%). This is definitely too widely spaced.
Yeah, this was a bug I accidentally seem to have introduced a bit ago. I apologize. The correct ratio I wanted to use was the one that Tufte CSS uses, which is 21px size to 30px height, which is a much more reasonable ratio. (This will be fixed in the next few days)
This is fixed now.
It might depend on screen size.
It does not.
At https://www.lesserwrong.com/sequences, when I open up Chrome’s dev tools on my 13 inch Macbook Pro with a macOS Sierra OS, the computed value of font-size for the paragraph of main text is 20px, and the computed value of line-height is 25px. But on https://www.lesserwrong.com/posts/AmaWMMWPzuQ62Ernf/against-individual-iq-worries I’m getting the same values you mentioned. So I assume it at least depends on what type of post is being displayed.