iso paper sizes are delicious: sides are 1:sqrt2 or about 1:1.414

A4 is 210x297mm

A4 folded in half is 148x210 or A5.

A3 is two A4s, or 297x420

go to A0 841x1189 or one square metre.

A-1 (A Minus One) is 2 square metres.

Australia is ~A-43

The visible universe ~A-179

A proton about A139.

A Quark? A151

Presumably A232 is one dimensional though, as it's planck length on the long edge.

Today is MAR 10, aka Mario day. It is also extremely close to the spring equinox.

This implies a cycle of Wario Day (fall equinox), Luigi Day (summer solstice), and Waluigi Day (winter solstice).

Luigi's height and generosity represents the wheat stalk; when we feast upon the harvest we embody Wario's girth and greed.

Waluigi stands for the lean times that come during winter. As the snows melt he is replaced by Mario, whose plumber nature blesses the fixing of pipes that burst from the cold.