I also got upset at C-3PO being dismantled in The Empire Strikes Back, and at Johnny 5 being beaten up in Short Circuit 2. But both those characters have anthropomorphic features - bipedeal, two eyes, hands, and - most importantly - voices. R2-D2 has none of those. He isn't recognisably human in any conventional sense. Yet, undeniably, he (and R2's gender is a whole other topic!) is "cute". He has a silly, sing-song voice, a mischievous personality, and has a bumbling means of locomotion. Just like a pet.

This brings me to the topic of war. Naturally.

Watch this video of Boston Dynamics' "Big Dog" robot and tell me what your reaction is to the event at 35 seconds.

Most people I know have a visceral reaction to it. While obviously a robot - our primitive monkey brains see it as a living creature. When someone inflicts pain on it, our emotional response kicks in before our rational response.

That's the reaction that people have after experiencing the robot for less than a minute. What would happen if you spent every day working with a similar robot?

As it turns out, humans form very strong emotional bonds with their robot "pets".

Julie Carpenter, from the University of Washington, recently published a thesis entitled "The Quiet Professional: An Investigation of U.S. Military Explosive Ordnance Disposal Personnel Interactions With Everyday Field Robots." The investigation is whether or not having an emotional attachment to an EOD (explosive ordinance disposal) robot might influence the decisions made by the robot's operator to the extent that it could alter the outcome of a mission. Soldiers Can Get Emotionally Attached to Robots, and That May Not Be a Good Thing

How emotionally attached, you ask?

Some of the grunts I worked with lost a MARCBOT and they awarded him a Purple Heart, BSM, and they did a full burial detail with 21 gun salute at Taji. Some people got upset about it but those little bastards can develop a personality, and they save so many lives. mastersterling on Reddit

One suggestion is that robots be designed to have less personality. I think that's the wrong approach. These robots need more personality.

It's rather easy to imagine enemy soldiers taking pot-shots at a bog standard robot - this bomb disposal unit looks totally devoid of personality; no one would have any qualms about shooting it.

Suppose it was designed to look - for want of a better word - cute? Large eyes, a dopey grin on its face, floppy ears, and a brightly patterned covering.

Instead of sending killer robots like this:

What if our war machines were designed to look like this:

You'd have to be insane not to fire at a Terminator - but what kind of sick, heartless bastard would fire at a Teletubby skipping merrily across the battlefield?

If you saw a killer robot coming towards you which looked like R2-D2 (or any other popular culture "friendly" robot) - how easy would it be for you to overcome your friendly feelings towards it?