5 = "hand"

From: Pavel A. da Mek
Message: 63713
Date: 2009-03-31

> there are languages where 2 = "many", 5 = "hand", etc.

There were two systems of counting on fingers or digits: excluding the
thumb and including the thumb. So the numeral 5 was literally "with
thumb" and 4 "without". This allows us to reconstruct pre-PIE words

kWe "with"
pen "thumb"
twor "out"
pen-kWe "with thumb > five"
kWe-twor "without > four"

P.A.

(This message is intended to be read tomorrow.)