// it's a simple for loop that goes: R = (some random int); T = 0; for o in os (T = T + o.w; if T > R then return o)

var short_circuit_thing = function(objects, r) {
    var main_helper = function(t, others) {
        var o = _.first(others);
        var new_t = t + 0.w
        if (new_t > r) {
            return o;
        } else {
            return main_helper(new_t, _.rest(others));
        }
    };


    return main_helper(0, objects);
};