Mankind isn't getting dumber. On the contrary, they're getting smarter. Too smart if you ask me. Like I said earlier, there should be a limit to things. And because we're getting smarter, we're also getting lazier. We invent things that do things for us, not for the mere challenge of making it (though that may be one of the cause), but so it does it instead of us.
Mankind will eventually lose its grip on the world, and just trust in the machines to do everything for us. If you ask me, that will completely disrupt the economy. We will begin to lose jobs because machines are replacing us, simply because they're more efficient. All we'll do is sit home and watch television or use the computer. Man will become less physically fit, and our health will become worse. Even if the machines aren't killing us directly, they will still be a cause. However, I do agree that even if this is true (and it very will may not be), it isn't going to be happening in our lifespan.
Of course, the Rubot isn't exactly that advance to begin with. Hell, it looks almost fake if you ask me. And it probably is.
And lastly, this is all just my opinion and beliefs, don't think any less of me (if you haven't already). People are entitled to their beliefs. Cheers!