Shooting, beating, chaining, drugging ... how can anyone justify the abuse inflicted upon autistic children?* It's as if society as a whole - including parents - believe autistic children are property, to be used, abused, and disposed of merely because to do otherwise would be too "inconvenient".
*Obviously a rhetorical question. There is no justification.
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.