We love the sound of laughter - but only if it's spontaneous and open mouthed, a new study reveals today. Scientists discovered laughter is only truly infectious if its an open-mouthed 'ha-ha' rather ...
Posts to Reddit and Twitter found by Buzzfeed tell of instances where the Amazon Echo Dot, Echo, and other Echo hardware emits a laugh. While Alexa does have a laughing sound available by request, the ...
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