Like many people, I suffer from hearing loss. Within the last year, I finally decided that I’d had enough and purchased a couple of hearing aids. I had a lot of questions about hearing aids - the first of which was why are the darned things so expensive. But after learning more about them, I see why. These are not just amplifiers; modern hearing aids are micro-computers that adjust sound levels based on computerized frequency mapping of the individual’s hearing. I can’t tell you the impact of hearing sounds that I had not heard in years (truthfully decades). It was striking and a bit overwhelming at first. It seems that a person doesn’t notice gradual declines in hearing - the daily losses are so small that you grow used to them. Then one day you realize that you’re not hearing bits of conversation and nuances of speech. You start missing out on conversations and compensating for it, then you figure out that something has to change.