Change
When an object changes, it always changes in some particular way. A baby grows up, and so changes in respect of size and maturity; a snake sheds its skin, and so changes in respect of its skin. "Change" may therefore be defined as follows:
- An object, O, changes with respect to property, P, if and only if O has P at one time, and at a later time, O does not have P.
That seems to be, in one way, what it means for a thing to change: it has a property at one time, and later it does not have that property. If a banana becomes brown, it can then be said: at one time, the banana is yellow; several days later, the banana is not yellow, but is instead brown. This appears fairly straightforward at this point, and there are no apparent problems as yet.
Another way for an object to change is to change its parts.
- An object, O, changes with respect to its part, P, if and only if O has the part P at one time, and at a later time, O does not have P.
Some philosophers believe that an object can't persist through a change of parts. They defend mereological essentialism.
Read more about this topic: Identity And Change
Famous quotes containing the word change:
“I hope we shall give them a thorough drubbing this summer, and then change our tomahawk into a golden chain of friendship.”
—Thomas Jefferson (1743–1826)
“The appeal of the New Right is simply that it seems to promise that nothing will change in the domestic realm. People are terrified of change there, because it’s the last humanizing force left in society, and they think, correctly, that it must be retained.”
—Gerda Lerner (b. 1920)
“Every daring attempt to make a great change in existing conditions, every lofty vision of new possibilities for the human race, has been labeled Utopian.”
—Emma Goldman (1869–1940)