"Show don't tell" has been a disaster for mankind. I'm sick of authors turning every scene (especially openings) into a puzzle because just telling the reader what's going on would be too low-brow for them. If telling, or even summarizing, your story in a straight manner makes it bad, you just have a bad story. Part of the reason why Harry Potter was so ridiculously successful even before the movies is that it broke this rule. Intended as a children's book this was probably deemed necessary, but in reality it's just better writing, period.