There are some subjects that seem to come up all the time in these Reading the Comics posts. Lotteries. Roman numerals. Venn Diagrams. The New Math. Kids not doing arithmetic well, or not understanding when they do it. This is the slate of comics for today’s discussion.

Olivia Jaimes’s **Nancy** for the 27th is the Roman Numerals joke for the week. I am not certain there is a strong consensus about the origins of Roman numerals. It’s hard to suppose that the first several numerals, though, are all that far from tally marks. Adding serifs just makes the numerals probably easier to read, if harder to write. I’ll go along with Nancy’s excuse of using the weights to represent work with a lesser weight.

Joe Martin’s **Mr Boffo** for the 27th is a lottery joke. And a probability joke, comparing the chances of being struck by lightning to those of winning the lottery. This gives me an excuse to link back to **The Wandering Melon** joke about the person who suffered both. And that incident in which a person did both win the lottery and get struck by lightning, albeit several years apart.

Rick DeTorie’s **One Big Happy** for the 28th has the kid, Joe, impressed by something that he ought to have already expected. Grandpa uses this to take a crack at “that new, new math”, as though there were a time people weren’t amazed by what they should have deduced. Or a level of person who’s not surprised by the implications. One of Richard Feynman’s memoirs recounts him pranking people who have taken calculus by pointing out how whatever way you hold a French curve, the lowest point on it has a horizontal slope. This is true of the drafting instrument; but it’s also true of any curve that hasn’t got a corner or discontinuity.

There aren’t comments (so far as I’m aware) on Creators.com, which hosted this strip. So there weren’t any cracks about Common Core. But I am curious whether DeTorie wrote Grandpa as mentioning the New Math because the character would, plausibly, have seen that educational reform movement come and go. Or did DeTorie just riff on the New Math because that’s been a reliable punching bag since the mid-60s?

Liniers’s **Macanudo** for the 28th is the Venn Diagram joke for the week. And it commits to its Venn-ness. This did make me wonder whether John Venn did marry. Well, he’d taught at Cambridge in the 19th century. Sometimes marrying was forbidden. He married Sussanna Carnegie Edmonstone in 1867, and they had one child. I know nothing about whether he ever had a significant marital problem.

This past week was much busier for mathematically-themed comic strips. There’s going to be at least one more essay this week. There might be two. They’ll appear here, along with all the other Reading the Comics posts.