This isn't so much a conspiracy, as a 'what if' speculation, curtosy and brain child of Sir Step Hen.
We all know Stephen Hawkings. The loveable, rocking smartist man in the world scientist dudey, so cool to a) be British and b)appear on The Simpsons. Lets face it, hes just cool.
We also all know about his condition; he has ALS, and it is a tragedy. Aparantly he was told he was going to die or something by 24, but hes still going strong...something like that anyway, I'm sure he knows. Ooh, worth mentioning now to back up his base coolness, when asked what he thought about his condition he replied "Not a lot". Hes a dude.
Anyway, the basic conspiracy is, what would have happened?? Steve thinks one thing : EVIL GENIOUS! Imagine his potential for mad scientist if he'd had a fully operative body! He could have conquered the universe three times over by now. So, in retrospect, perhaps its a good thing he is as he is - perhaps not. One thing for sure, he wouldnt be as respected in my eyes without the robot voice, and thats final.