Or part of the point.
Pi Day deals - Wednesday is March 14. A lot of them involve pie, although there is also a National Pie Day on January 23. They were $196.99 but go for $165.59 on Pi Day.
Pizza places are is also getting in on the deal. Here are some of the celebrations we've gleaned from press releases and social media.
"LUCY'S NEW YORK STYLE PIZZERIA: One topping 12" pizzas carry-out and dine-in are $3.14.
BLAZE PIZZA: The fast-casual pizza chain will also have personal create-your-own pizzas for $3.14 on "Pi" Day. Nine-inch pies will be available for $20. 4712 Colleyville Blvd., Colleyville, https://www.buttermilkskypie.com.
Boston Market: Offering free chicken pot pie with purchase of one pot pie and drink.
Perhaps, we should be calling it "pie day".
At Three Brothers Bakery, you can win a free pecan pie if you can recite 75 digits of pi. Blaze is open from 11 a.m. until 10 p.m. on Wednesdays.
Achatz Handmade Pie Co.: Offering pie slices for $3.14. Look familiar? It's International Pi Day today, a mathematical phenomenon celebrated around the world.
According to a national survey, 55 percent of Americans plan to celebrate Pi Day somehow.