what is this difference between truth and error?

https://www.youtube.com/watch?v=1QOvPU-7Gx8&t=216s

   Go if you please to 3:05 of this link until 4:55.  Here Elizabeth Prophet reads a viewpoint on the identity of Shakespeare, thereby offering a possible solution to a mystery.  The mystery is on one hand what is this difference between truth and error? and on the other hand Who was Shakespeare?  But each person either weighs the challenge of truth vs. error and Who was Shakespeare? or does not weigh the challenge in the scales of honesty, faithfulness, decisiveness and common sense or does not do so at all.  It does not matter so much at all what someone else’s opinion is but what is one’s own discrimination, discernment and determination brought to bear on the issue.  So take up my challenge to you, please, review this less than 2 minute passage, avoid bypassing this challenge of mine that can then be your own challenge, just wonder at the audio/visuall presentation and what is.  The subject really is how one might tell the difference between truth and error.  Don’t think a guess at who Shakespeare was is the point because that is not the point.  The point is more profound than that.  The point is to either put one’s heart into the challenge or not to put one’s own heart into the challenge that life presents to one.  The challenge of life itself happens every day, n’est-ce pas?   -4
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  Sowing dragon’s teeth concerns  Greek myth—Phoenician Prince Cadmus and in Jason's quest for the Golden Fleece.  In each case the dragons are present and breathe fire.  Their teeth, once planted, would grow into fully armed warriors.
  Cadmus, the bringer of literacy and civilization, killed the sacred dragon that guarded the spring of Ares.  The goddess Athena told him to sow the teeth, from which sprang a group of ferocious warriors called the spartoi. He threw a precious jewel into the midst of the warriors who turned on each other in an attempt to seize the stone for themselves.  The five survivors joined with Cadmus to found the city of Thebes.   https://en.wikipedia.org/wiki/Dragon%27s_teeth_(mythology)
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