Universal Design

Many people go around day to day not noticing problems veiled everywhere. Humans want a world that is comfortable and functional no matter whatever physical limitations. That is universal design and universal design aims to create products and environments usable by all people without the need for adaptation or specialized design. Just because some product works well for you doesn't mean it works well for everyone. As a designer you want to make whatever product you are working on as universal as possible that way the product is more effective. Also you want to make this product equitable meaning you want to produce designs appealing to and usable by people with diverse abilities, but of course you don't want to segregate or stigmatizing anyone. That's hard because society has a wide range of preferences and skills. These principles appear to be common sense but still many products and homes aren't user friendly. This usually is because designers think of interesting solutions to these  user friendly problems and the solution is not cost efficient, so achieving universal design objectives requires even more creative thought and often more initial investment. It would be in the governments best interest, from societies stand point, to push for laws requiring universal design, even if it is going to cost them more money.