Once upon a time, a single gun shot was enough to rally a herd of walkers large enough to cause enough mayhem at a farmhouse that it would burn down and its residents would run for their lives on The Walking Dead.
On Sunday night, a gun shot did not catch the attention of single walker roaming amongst a herd at a carnival.
Years ago, Rick Grimes and his group would never be silly enough to fire an unnecessary gun shot in fear of being surrounded by walkers. Granted, today's survivors on the AMC series have developed the skills to take on walkers with much more ease than they were able to maneuver in earlier seasons, but calling a herd to your location never seems like a good idea.
In any case, when Michonne fired her gun from atop the school, twice, not a single walker turned their attention toward the sound of the gun nor the target which is knocked over.
This is one of two complaints plaguing The Walking Dead's subreddit about the Rick and Michonne scenes at the apocalyptic carnival. Some users are shouting out that Rick was only hitting walkers in the jaw with his hatchet and it was enough to kill them. According to the rules of The Walking Dead, walkers will only be stopped by damaging their brain.
The second complaint can easily be defended, as Rick's hatchet is likely causing all sorts of damage to walker heads which is not going to be examined beyond ripping half of their faces and heads off with one swing. Given the deterioration of the walker bodies and brains, any sort of impact to the walker's heads would be enough to damage the brains behind their weakened skulls.
As for the walkers not turning towards the sound of a gunshot, that's one only the team behind the series can explain. Perhaps the walkers' ears are getting worse with age?
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