*gwistis

I dont have a ideea how the latin "digitus" will derive from
the PIE radical.
But I know the romanian "deget"< lat. digitus is a new word
in the language. The old one , still in use, in fact very in
use iz "de$t".
So far I am informed, the albanians have too "de$t"
The plural form from de$t is de$ti
The PIE *gwistis with the rule of Vinereanu *gw fallowed by
"e" or "i" >ge would give in romanian gesti.
The ruile in romanian I explained ( st fallowed by e or i >
$t) will make from gesti>ge$t
Tthe plural form of ge$ti is in fact the same as PIE *gwesti
Even if in the articulation of the "ge" in pronounciation of
this word is almost the same as of "de", it still does not
explain why "ge" went "de".

any ideea how to explain that? ( ge >de)

P.S. One can argue the "desht" is a peasantly form from latin
digitus, romanian deget.
The argumentation is , the romanian "ge" before "st" sincoped
and st went "$t" under the influence of last "i" from plural
( Rule: st fallowed by i or e >$t)
If for st>$t the argumentum is OK there is no explanation for
sincoping of "ge". Deget is a easy word to speak and a short
one, why sincoping?
Opinions?