I put my foot in my mouth frequently, but have learned the
   importance of apology. I speak boldly with the best of knowledge
   I have at hand, and wait for correction. If I'm mistaken, I
   apologize. I've also gone the alternative route, of waiting
   until I have all of my facts 100% correct before acting... but
   then I found I wasn't contributing anything. I like being wrong;
   I'm a know-it-all by nature and it forces me to step back and
   go, "Ok. I learned something today about myself"