What Are the Limits of Computing?
What constraints govern the physical process of computing? Is a minimum amount of energy required per logic step? There seems to be no minimum, but some other questions are open.
What's the Latest Development?
A computation, whether it is performed by electronic machinery or an abacus or in the brain, is a physical process. It is therefore subject to physical laws, but what are the physical limits of computation? And what do quantum computations imply? "Even in quantum mechanics extremely fast events can take place without any loss of energy. Our confidence that quantum mechanics allows computing without any minimum expenditure is bolstered when we remember that Benioff and others have developed models of reversible quantum-mechanical computers, which dissipate no energy and obey the laws of quantum mechanics."
What's the Big Idea?
What did computational theory look like in 1985? Many old questions are still perplexing computer scientists today: "How much energy must be expended to perform a particular computation? How long must it take? How large must the computing device be? In other words, what are the physical limits of the process of computation? So far it has been easier to ask these questions than to answer them. To the extent that we have found limits, they are terribly far away from the real limits of modern technology. ... We are looking for general laws that must govern all information processing, no matter how it is accomplished."
Former president of the ACLU Nadine Strossen discusses whether our society should always defend free speech rights, even for groups who would oppose such rights.
- Former ACLU president Nadine Strossen understands that protecting free speech rights isn't always a straightforward proposition.
- In this video, Strossen describes the reasoning behind why the ACLU defended the free speech rights of neo-Nazis in Skokie, Illinois, 1977.
- The opinions expressed in this video do not necessarily reflect the views of the Charles Koch Foundation, which encourages the expression of diverse viewpoints within a culture of civil discourse and mutual respect.
Designers from Luxembourg created a smart planter that can make anyone have a green thumb.
- A design team came up with a smart planter that can indicate 15 emotions.
- The emotions are derived from the sensors placed in the planter.
- The device is not in production yet but you can order it through a crowdfunding campaign.
If you don't want to know anything about your death, consider this your spoiler warning.
- For centuries cultures have personified death to give this terrifying mystery a familiar face.
- Modern science has demystified death by divulging its biological processes, yet many questions remain.
- Studying death is not meant to be a morbid reminder of a cruel fate, but a way to improve the lives of the living.
- Often times, interactions that we think are "zero-sum" can actually be beneficial for both parties.
- Ask, What outcome will be good for both parties? How can we achieve that goal?
- Afraid the win-win situation might not continue? Build trust by creating a situation that increases the probability you and your counterpart will meet again.