To me it doesn't matter if a few characters are just 'poster' characters for certain disablites as we are real. We don't exist to make a point or necessarily teach or even be so good at one thing that it totally 'makes up' for what we can't do. We simply are, and I think this show of all places is a wonderful stage for that are-ness. Even maybe just maybe that many of us aren't the types that push our bodies in a battle to prove ourselfs but still live quite happy lifes
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I was actually disappointed to see them get rid of the girl in the wheelchair. As a child it made me feel that that place they lived in was just your everyday school away from school, just like seeing the children with much worst CP than mine in some of the older songs in the show...
I dunno what point I was going toward here but I guess just that we aren't just a group of people to only be added if the time calls for it, but at the same time only have worth as 'real' characters if it is a main character part :\ It would be nice to have more children's stories not have the end moral that all disabled people overcome body/mind troubles and then can climb mountains and the like
. That actually isn't all that common. It's a bit like saying everyone can get good enough to be in the Olympics with working muscles:\