A VERY good point Dorothy!! Even if someone's post sounds like they are the ultimate source or authority on a topic, you should be a bit sceptical, and look for confirmation from other sources.
Heck even the staff, though we may think we are right, may be accidentally passing on incorrect information. (We're hired more for our good looks than what we know <G>)
And when that happens, hopefully another staff member or poster jumps in to correct us.