Oh this is so true! *This is the next line from the quote:
*Basically, they shift the problem so it's out of their hands.
Or.. Their development equipment is so good that that don't
consider how things will OPERATE IN THE REAL WORLD! haha :P *I
love places where idealism and reality converge and the human
problems that come with it. [start quote] If the inputs to an
arbiter or flip-flop arrive almost simultaneously, the circuit
most likely will traverse a point of metastability.
Metastability remains poorly understood in some circles, and
various engineers have proposed their own circuits said to solve
or filter out the metastability; typically these circuits simply
shift the occurrence of metastability from one place to
another.[8] Chips using multiple clock sources are often tested
with tester clocks that have fixed phase relationships, not the
independent clocks drifting past each other that will be
experienced during operation. This usually explicitly prevents
the metastable failure mode that will occur in the field from
being seen or reported.
from*
https://en.wikipedia.org/wiki/Metastability_in_electronics