I like pi (π)

π=C/d where c=a circle's circumference and d=the circle's diameter.

I discuss pi in my answer to the Pinocchio paradox:

 Answering the Pinocchio Paradox

Continue eating (level-1 and) level-2 apples:

Eaten on Mar. 13, 2018 to encourage level-2 apple consumption

Pi Day Google doodle: Wednesday, Mar. 14, 2018

Eaten on Mar. 14, 2018 to encourage level-2 apple consumption

Eaten on Mar. 15, 2018 to encourage level-2 apple consumption