Single Sided Hearing Loss

I'm amazed how many posts there have been lately about single sided hearing loss and think having our own thread might be beneficial. I'm missing something really important about this issue and hope someone will please help me understand it. I used to explain my hearing issue to people who asked as follows: when you have two good ears, sound comes in from both sides and your brain can select what it wants to "hear". When you have only one good ear, sound comes in on one side and your brain can't separate out what it wants to "hear." It's all noise. Is that right or am I totally wrong? If it is right and I get the cros hearing aid, how will moving sound from my deaf ear over to my good ear make any difference in my ability to hear? Sound is still going in one side and will still be noise. I understand that if I need the bicros hearing aid, it will pick up the sound from my deaf ear, move it to my good ear and enhance the ability to hear in my good ear. This is really complex. I'm rooting for the new technology in the article Ken sent out about growing new tiny hairs in the ears of hard of hearing people to help them hear more clearly. Thanks for helping me understand this. Nancy