The world of teaching and learning is rife with received wisdom, including the potency of learning styles (which deserves a page to itself), and plenty of other unproven but fashionable ideas. It is not so much that they are "wrong", but:
the evidence base and/or research methodology may be flaky, and/or
they may have been misinterpreted and generalised beyond their legitimate use, and/or they originate from such tightly controlled laboratory settings as not to make sense in the real world.
Via Jean-Loup Castaigne, Bruno De Lièvre