Eating and ergonomics. It's something we've always done without thinking. We naturally have everything easily within reach and we have no problem getting food to our mouths with normal utensils.
Not so with Allie. Allie's hands don't bend normally, so the spoon has to be bent. And she doesn't have the coordination to only put the spoon so far into her mouth (as opposed to down her throat) so there's a little mouth-guard attached that works as a spoon stopper.
Here's a demo: