The left side of this formula means 4 as usual, but 四 of the Kan-characters means 4 .
Meanwhile, the right side of this formula means the number of strokes required to draw 四 ( namely, five strokes are needed to draw 四 ).
Accordingly, a rather cryptic equality 「2 ＋ 2 ＝ 2 × 2 ＝ 5」( pointed out in 『一九八四』written by George.Orwell ) holds as a kind of double or multi-meaning in Japan, North & South Korea in the past, China, Taiwan and Sing-a-pore at present.
By the way, exotic R＾4 s are found out in non-integer valued dimensional fields between 4 and 5 .
Somehow, it's often, biasedly told that MIB ( Men In Black ) and WIB ( Women In Black ) have looks like orientals.
