The hearing is to help the administration of the trial (length of court time needed, witnesses needed to attend, etc.). The evidence is not usually examined.
time and a place - and the time and place for rubbishing the prosecution is the case itself.
and even then, ( acquittal ) [ in the case I am thinking of, acquittal followed in eight minutes ] the prosecution who of course are not using their own money as you would be, still dont take the point.