An Experiment That Disproves Free Will?

Alfred Mele: These were originally done starting in the early ‘80’s. They are still being done today. The technology today is better, but it’s the same kind of experiment. What you have are subjects seated in a chair like the one I’m sitting in, and they have this task. To flex the wrist whenever they want. They’re watching a fast clock. There’s dot on the clock and it makes a complete revolution in less than 3 seconds, and they’re hooked up to two machines. One is measuring EEG, electrical conductivity on the scalp. And the other measures a muscle burst on the wrist, it’s an electromyogram. Okay? So, they’re supposed to flex whenever they want and watch this rapidly revolving spot on the clock and then after they flex, they’re supposed to indicate where the spot was on the clock when they first became aware of their urge, intention, decision, to flex. And they indicate it by moving a cursor to that spot on the clock. Okay, is that clear? 

All right. Now, when these subjects are regularly reminded to be spontaneous and not to plan in advance when to flex, what you see is that – well, it’s 500 milliseconds, it’s about half a second before the muscle burst, you get a marked change in electrical conductivity on the scalp. You get this ramping up effect. So, that’s about ½ second before the muscle burst. On average, subject say, they first became aware of this urge, or this decision, or intention, or whatever at about 200 milliseconds before the muscle burst. So, if you average out all those responses that they make by moving the cursor, it’s about 206 milliseconds before the muscle burst. 

So, Benjamin Libet was the first one to do these studies. And they’re very interesting studies. And what was innovative is he had a way to measure consciousness because he was timing this conscious experience, he thought, right. So, the claim is, then the brain is deciding over a third of a second before the mind becomes aware of the decision. So, conscious free will isn’t driving this behavior, isn’t generating the flexants. And then Libet generalized and he said, “Well, you know, this is the way it is for all behavior. So, the brain unconsciously makes decisions and the mind becomes aware of them only later.”

Neuroscientist Benjamin Libet conducted experiments in the 1980s which suggest that our behaviors are determined by our brain and only later interpreted by our mind.

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Would you have to tip robots? You might be answering that question sooner than you think as Domino's is about to start using robots for delivering pizza. Later this year a fleet of self-driving robotic vehicles will be spreading the joy of pizza throughout the Houston area for the famous pizza manufacturer, using delivery cars made by the Silicon Valley startup Nuro.

The startup, founded by Google veterans, raised $940 million in February and has already been delivering groceries for Kroger around Houston. Partnering with the pizza juggernaut Domino's, which delivers close to 3 million pizzas a day, is another logical step for the expanding drone car business.

Kevin Vasconi of Domino's explained in a press release that they see these specially-designed robots as "a valuable partner in our autonomous vehicle journey," adding "The opportunity to bring our customers the choice of an unmanned delivery experience, and our operators an additional delivery solution during a busy store rush, is an important part of our autonomous vehicle testing."

How will they work exactly? Nuro explained in its own press release that this "opportunity to use Nuro's autonomous delivery" will be available for some of the customers who order online. Once they opt in, they'll be able to track the car via an app. When the vehicle gets to them, the customers will use a special PIN code to unlock the pizza compartment.

Nuro and its competitors Udelv and Robomart have been focusing specifically on developing such "last-mile product delivery" machines, reports Arstechnica. Their specially-made R1 vehicle is about half the size of a regular passenger car and doesn't offer any room for a driver. This makes it safer and lighter too, with less potential to cause harm in case of an accident. It also sticks to a fairly low speed of under 25 miles an hour and slams on the breaks at the first sign of trouble.

What also helps such robot cars is "geofencing" technology which confines them to a limited area surrounding the store.

For now, the cars are still tracked around the neighborhoods by human-driven vehicles, with monitors to make sure nothing goes haywire. But these "chase cars" should be phased out eventually, an important milestone in the evolution of your robot pizza drivers.

Check out how Nuro's vehicles work: