I dont think they are a main feature of tarot, but they are a main feature in symbolism and one of the few things that have lodged (as comparative symbols) in the TRUE MODEL * of the collective unconscious and behind the system that was made a main system of tarot (by some).
( * ie. the one we all share ... all people observed 7 'moving stars' , aside from cultural differentiation, it is a valid 'symbol set' in the collective unconscious - as is a hand print, a crescent moon shape, etc . _
Hence, the set of associations that have entered tarot. I have maintained, and still do, the basic patterns here (in tarot and other occult systems) connect because they 'match through' the collective unconscious (meaning all of us can see some validity to them).
They are;
7 - from the 7 observed 'wandering stars'
10 - the digits on the hand.
3 : 4 (their relationship and multiplication { and addition also gives 7} all through MANY things, including astrology) - the structure of the fingers (that were used for base 12 counting ) .
https://www.google.com.au/search?q=...a=X&ei=xOVfVMKOC6K5mwWztoH4Dg&ved=0CAYQ_AUoAQ
No. I am sorry, but I cant see that. This is what I was asking .... how and where do you see that in the Waite deck ?