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:
“We must be willing to change chairs if we want to grow. There is no permanent compatibility between a chair and a person. And there is no one right chair. What is right at one stage may be restricting at another or too soft. During the passage from one stage to another, we will be between two chairs. Wobbling no doubt, but developing.”
—Gail Sheehy (20th century)
“Jaques. The worst fault you have is to be in love.
Orlando. ‘Tis a fault I will not change for your best
virtue.”
—William Shakespeare (1564–1616)
“Time heals griefs and quarrels, for we change and are no longer the same persons. Neither the offender nor the offended are any more themselves.”
—Blaise Pascal (1623–1662)