It's Futura vs Verdana. One of my loved ones is really into analyzing fonts, so this caught my eye:
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The Font War: Ikea Fans Fume over Verdana," by Lisa Abend on Time.com dated Friday, Aug. 28, 2009.
Could his interest in fonts be because when he was little, and I worked as a type designer, I would sometimes bring him to work on days that he couldn't go to daycare? Probably not, but it's fun thinking about it. He's a young adult now, and math is his life. He's not into art like his mom is, but he's really into fonts. I love it and I wanted to share this article.