Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.
Geoengineering involves humans making intentional, large-scale modifications to the Earths geophysical systems in order to change the environment.
Our government makes the simple promise of a secure retirement to every American who works for many years and contributes to our retirement benefit system.
In the United States, the Supreme Court's decision of 1954, outlawing segregation in school systems, was greeted with mixed feelings of hope and skepticism by African-Americans.
Mr. Speaker, our Nation depends on immigrants' labor, and I hope we can create an immigration system as dependable as they are.
Our only real hope for democracy is that we get the money out of politics entirely and establish a system of publicly funded elections.
A sincere and steadfast co-operation in promoting such a reconstruction of our political system as would provide for the permanent liberty and happiness of the United States.
I think money helps us. It helps us. It's our - it's our exchange system. But it does not buy you happiness. It doesn't buy you health.
Marxism conceives of the new system of socialism as the necessary outcome of all previous history made possible and necessary only by that previous history.
It is apparent, if you go back through our history, that the grand juries of the criminal justice system do not value black lives.
As a rule, software systems do not work well until they have been used, and have failed repeatedly, in real applications.
I wasn't one to go out and buy a new car and stereo system and expensive clothes. My mom helped keep me grounded.
Because the Illinois death penalty system is arbitrary and capricious - and therefore immoral - I no longer shall tinker with the machinery of death.
We have 62 counties in New York State and each has its own system of death investigation.
Mendacity is a system that we live in. Liquor is one way out an death's the other.
Last year, Congress gave the Department of Defense the authority to design a new civilian personnel system for its employees as part of the defense authorization bill.
We have to design a health delivery system by actually talking to people and asking, 'What would make this service better for you?' As soon as you start asking, you get a flood of answers.
You look at public education system, charter schools, infrastructure, in so many ways New Orleans has come back stronger.
In Britain, the centrally prescribed welfare to work system short-changes the young unemployed. Transport, housing and education are over centralised.
A truly vibrant and creative culture depends on a system of education which is not divided along class and sectarian lines.
I'm a great believer in the competitive system, and think that competition will bring us greater innovation and put American industry in information ahead of everyone also.
