In the space station (Ø3), Willy Walrus (w) chops up a steel beam (工) with a sickle (乛) into five (五) equal parts. He uses the five parts to assemble a steel pentagram (五).
卅
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一
+
川
:
Thirty is a square pyramidal number, that is you can built a pyramid with a square base (of four times four items in that layer) out of fourty things.
卅
=
一
+
川
:
Just as Socrates is using the ashram's bathroom the water of the river is swelling so much that he will have to swim unless he uses a boat or something similar. Socrates thinks that this is the perfect opportunity to try out a model he had in mind for a long time. With thirty flutes he builds an inverted pyramid and yes, it floats!