The old must remain functional
while the new is developed
As such the new does not replace
the old but is added to it
A clever tool of evolution
in creatures with tongues
is the tendency for taste
to notify the brain
of new and unfamiliar things
Naturally it can be assumed
that this prevents the eating
of poisonous substances:
adopting the mantra
that familiar is good
But how far does that extend?
Does that old trick of the brain
still keep us safe in a modern world:
making the new repulsive
so that we prefer variations of the old?