double-equal to mean prolonged equality

10.12: adda/lexicon/==:
. the == could be like the japanese way of
2-trees representing many trees: a forest .
. 2 equals would say the values are
equal for many moments,
ie, they are pointers to the same obj; [10.13:
or they are part of a notify&update pattern .
it could also be used as a special form of
assignment stmt:
whatever you're getting access to,
you have some way of maintaining synchronization,
as would occur if using aliases .]