Congrats on being an early reader, b/c I spotted this on a fresh read Monday morning and zapped it! [I'm a IEEE Spectrum editor] This is a problem that's got me the odd time before—when you've read an article so many times, and something somehow gets duped in the transfer to the online content management system, it's easy not to notice because you think you just lost focus for a second and your eye jumped back to re-reading the same paragraph, not that it's actually the same para twice. You get as many eyes as possible on articles to prevent this from happening, but every now and then something slips through, especially when you have a very atypical layout and structure compared to our regular articles, because focusing on those things is stealing cycles. So that one's on me!
