'Nothing fits in with polymorphism,
it abstracts from existence
Natural Desire (needs)
Craving Desire (wants)
Natural desires (bar safety, which is an underlying desire-constant,) are
governed by time. Food, or more importantly energy use is a micro-time dependant
(second based) desire. Sleep is a mid-time dependant (minute based) desire
and reproduction is a macro-time dependant (day based) desire. Natural desires
are cumulative (ie if you don't eat or sleep for 24-hours, you will know
you have not done this). These desires are not remembered, so a month after
not eating or sleeping for 24-hours, one can still function without referring
to this event.
Craving desires, I will argue, are time dependant as well. This may just
be considered true through our society and the way people become creatures
of habit. I fear that giving examples here would render me to criticism.
The resolution for the time dependence of craving desires is taken in the
early version of the Nervana project to be hour based. The time dependent
functions that need to be created in order for successful modelling will
be discussed later.