I set forth the legal definition under the two federal laws
an impairment that causes a substantial limitation on a major life function
of course some jobs can be done with such limitations. a software designer can work from a wheelchair
a police officer or firefighter-not so much. You can still be considered disabled under federal law even if your disability has no impact on your job
The problem is the person she was responding to in this post put forward a completely different definition.
An impairment that causes a substantial limitaiton on a major life function is SIGNIFICANTLY different than "if you can perform ANY job, you can't qualify for disability"
My mother is one of those disabled folks that likely most would ignorantly see and just assume isn't. She has a condition in her foot known as RSD or CRPS depending on what term you want to use. Basically, the nerves in and around her foot are constantly firing in a hyper sensitive pain reading manner. To give a reference, the McGill pain scale for Chronic pain arthritis is about an 18, chronic back pain at about 29, an amputation of a digit coming in around 40, and RSD checks in around 48 as the highest on the scale.
The pain is always present, but the severity comes and goes. During good times she can function somewhat normally, in large part because she's always had a good pain tolerance. During the bad times, she's got no recourse other than to put her head in a pillow and scream and cry until she can pass out.
She can't wear socks or tight fitting shoes because it creates significant pain all along the foot if she has a flare up. Even when seemingly acting "normal", her memory and ability to concentrate is significantly impaired because she rarely is able to actually partake in any kind of actual, restful, rejuvinative sleep. Attacks are random, though there are various things that can help induce (such as stress), and can be utterly dabilitating when they happen.
She does not "look" like a disabled person. She continues to make herself get up and go around and try and live a normal life because it's about the only thing that held her remains sane. Many with the disease don't, they stay hole up in their home causing atrophy to set into the limbs and many typically end in suicide. Trying to be as "normal" as possible keeps her moving, keeps her sane, and keeps her fighting against this. Yet to ignorant assholes leveraging "well I pay taxes and it goes into the system so I can speak my mind to any person I want that I think is faking it", I'm sure at times she may not "look" like she's "disabled".
What employer wants someone whose regularly medicated? Who is completely unable to be counted on as they could be stricten unable to reasonable function at any given time, for any given length of time? Who can not wear professional dress? Whose mind is reasonably cloudy and apt to miss details? What employer for what kind of job would actively seek to take on such a liability? Please, if you know it then it'd be wonderful to hear and I'll forward the information onto her. I can not speak for all disabled people, I can speak for my mother however...there's no doubt that if she COULD reasonably work a job she would. From the moment me and my Sister was out of the house she was working because it provided her with some actual new purpose and enjoyment in life. It provided additional income to allow her some of the freedom for things she enjoyed in life. Being placed on disability doesn't do any of those; the primary benefit of it for her was the fact that she'll no longer need to be paying significant money per month for COBRA (she previously had insurance through her job, which she was no longer able to work and had to part ways with).
Not everyone whose disabled has their legs amputated and are in a wheel chair. Is there fraud? Absolutely. Without question there is. But telling people off and giving them a piece of your mind and harassing them because someone THINKS they are being fraudulent doesn't do anything to "fix" the system...but it does likely lead to many people who are legitimately handicapped having to suffer from harassment and vitriol by ignorant bafoons who don't have 1/10th of the proper knowledge, expertise, or standing to question their condition.