After extensive testing in your correspondent's Moscow home, the results are now in.
There is no sound - not the ringing of a doorbell, the increasingly infuriated calls from a mother, the demands from a brother, the smashing of plates or glass, or the turning on of the televison or X-box - that penetrates a child's closed bedroom door and results in their speedy appearance downstairs in the kitchen quite as successfully as the noise of freshly-baked cookies being peeled off baking paper.
So now you know.
There is no sound - not the ringing of a doorbell, the increasingly infuriated calls from a mother, the demands from a brother, the smashing of plates or glass, or the turning on of the televison or X-box - that penetrates a child's closed bedroom door and results in their speedy appearance downstairs in the kitchen quite as successfully as the noise of freshly-baked cookies being peeled off baking paper.
So now you know.