it is absolutely credible , and a thesis worthy of examination , that the people on the other side simply could not hear him , through the glass or against some other more alien impediment , but the aural barriers his cuts ricocheted off of were ultimately no excuse for the refusal of persons and actions to be flattened by the yell from the other side , no excuse for their staunch denial of any obligation to submit to any authority of eyes avian or godly too squeamish to play in the mud , the mud and clay on their side .