Early in the new science-fiction film "Robot & Frank" (opening Aug. 24), Frank, an elderly man, gets a visit from his son, Hunter. Worried about his father's apparent decline, Hunter takes a gift out of the back of his car: a white robot with a humanlike body and a polite speaking voice.
The machine, Hunter promises, will keep his dad healthy and focused - and the house clean. Frank's not so sure: "That thing's going to kill me in my sleep," he worries. But before long, the "health care" robot is cooking his meals, planting a garden and planning activities to keep his human overlord occupied.
The film's depiction of robot-human relations may still be a fantasy, but it's also a reminder we've been expecting elder care robots like Frank's in the real world for several years now, and so far, they're nowhere to be seen. So what's the holdup?
It's no secret that America is getting older. By 2030, thanks to the baby boomers, one in five Americans will be 65 or older, stressing the health care system and economy. Half of those over 85 require assistance in everyday activities, and, if 2009 numbers hold up, more than 13 percent of people over 85 will spend time in nursing homes. It's unclear who will pay for this and how. And more importantly, it's unclear who will take care of all of these old people.
The solution, the robotics industry hopes, is technology. In Japan, where panic over an aging population is nothing new, elder care robots have been a priority for more than a decade. One of the Japanese researchers' bigger successes is Paro, a touch-sensitive companion robot - a sort of high-tech stuffed animal, shaped like a seal - for elderly people with cognitive disorders like Alzheimer's. Japanese Nursebots can lift up elderly patients and bring them breakfast in bed, and this year, researchers from Japan's Chukyo University released Babyloid, a babylike robot similar to Paro that looks like something that crawled out of a Miyazaki movie.
In recent years, Japanese tech giant Panasonic has created a hair-washing robot, a drug-delivery robot, a robotic bed and HOSPI-Rimo, a robot with a touchscreen that helps hospital patients communicate with doctors and family.
In the next decade, the selection of personal elder care robots is expected to expand dramatically in the United States as well. "Full robots with arms are still very expensive," says Ashutosh Saxena, a professor in the department of computer science at Cornell, "but they are getting cheaper by the day." He predicts that armless robots - capable of communicating verbally with the elderly and observing them in case of accidents - will hit the market within the next five years. These kinds of robots, which could even monitor a person's medication intake, should allow elderly people to live independently and healthily longer, like a very sophisticated Life Alert bracelet.
There's just one hiccup: the elderly themselves.
Despite manufacturers' hopes, robotic technology has proven to be alienating for many older people - even, the BBC reports, in Japan, a country with an intense, long-term love of all things robotic.
Alexander Libin, scientific director of simulation and education research at Medstar Health Research Institute, argues that one of the biggest challenges is that the elderly need to be able to communicate easily with them. Although many robots (and mobile phones) can now recognize voice commands, nonverbal cues pose a much bigger challenge. Libin, who has worked extensively on robot-patient interaction, believes that touch-sensitive technology - like the one used by Paro, the therapeutic seal robot - will play a large role in making robots palatable to seniors. DARPA, the government-funded research institute, is working on neural robot limb communication, a technology that, Libin believes, could be applied to robots.
Given the elderly population's diverse needs, elder care robots will also likely be far more specialized than "Robot & Frank's" robotic helper suggests. "People with chronic illnesses like diabetes need a robot that can help them with shots; people with bad vision need guidance; people with cancer who are in pain will need a robot to entertain them by having a conversation or reading a book," says Libin. The coming generation of robots, he says, will be created with those specific goals in mind.
Unlike the Japanese, American engineers have been focusing on robots that are more practical and less humanoid. "The Japanese want robots to be like them," says Libin, noting Japan's long tradition of treating inanimate objects like living beings. In the United States, we're more comfortable treating machines as machines. "We want things we can control."
The path toward robot acceptance may also require something very simple and, for robot manufacturers, frustrating: patience. The process of getting old people to be comfortable with robots, Saxena argues, will be a question of gradual acclimatization. Elderly people will have to get used to having small, nonthreatening observer robots watching them in their homes before they'll allow robots do tasks on their behalf - or even touch them.
And the truth is, boomers who grew up long before the rise of computers or smartphones may never be comfortable with the idea of replacing a human being with a machine. Like other forms of social change, robot acceptance may simply require one generation to replace the previous one.
This article arises from Future Tense, a collaboration among Arizona State University, the New America Foundation and Slate. Future Tense explores the ways emerging technologies affect society, policy, and culture.