Jeremy, I tried to comment in the article as to not pollute HN with the usual font complain, but the comment was rejected saying I had to be logged in.

Your text is really hard to read! The "f" looks like a "j"... my brain was all the time "a j is coming" and it made no sense in the word... that's because it's a "f". I had to parse "efficiency" 3 times in the first paragraph because it just reads like "ejjiciency"!