Explicit vs. Clever
And yet:    var totals = []
    for(var i=0; i<orders.length; i++)
        totals.push(orders[i].total);

Now... maybe "splat" and "get" are "jargon", or maybe they're "abstractions" or even "explicit" (frankly I didn't understand that stuff)...  But I'll bet good money that bugs in or near this version get fixed faster in the real world.  And I'll even bet that truth holds for people who happen to know what "splat" and "get" are supposed to mean.