When your kid tries to say 'Alexa' before 'Mama'

In Yana Welinder's house, her son will say "Papa' to either her or her husband. But her child, who just turned 1, does have a name for another prominent figure in the household: "Aga." Or, as the rest of us know her, Alexa -- Amazon's voice assistant. Welinder's son can't summon the assistant from the Echo speaker in their San Francisco home on his own. But he knows what he's trying to do.