An Intent is an intention to perform an action; in other words, a messaging object you can use to request an action from another app component An Intent is basically a message to say you did or want something to happen. Depending on the intent, apps or the OS might be listening for it and will react accordingly.
Mathematicians consider Descartes of the utmost importance for his discovery of analytic geometry. Up to Descartes's times, geometry, dealing with lines and shapes, and algebra, dealing with numbers, appeared as completely different subsets of mathematics.
The obvious implication is that, since we do know that external objects exist, this knowledge cannot come to us through the senses, but through the mind. Descartes uses three very similar arguments to open all our knowledge to doubt: The dream argument, the deceiving God argument, and the evil demon argument.escartes still has no knowledge of anything outside of his mind. He still has to make the crucial leap to the existence of an object outside of his mind. He must do this, however, strictly on the basis of the contents of his own mind.