An object is nothing but a continuous process of actual occasions as we experience them in their externalised condition. There is no fixed object anywhere. An event is a series of actual occasions revealed in perception as demonstrated in a molecule for a few moments. Objects are more complex formulations of such events. The objectness of an object is in its capacity to be experienced in perception.
Every actual occasion is sensitive to the existence of others, and thus to the entire universe.
All actual occasions take account of each other, and in some way, subtler than even sense-perception, 'perceive' each other. There is a kind of pervasive 'feeling' of every actual occasion for the others in the universe. Whitehead uses the word 'feeling' in quite a different sense from the one in which we are used to understand it, and makes it more fundamental than the conscious level of the mind in waking life. This feeling is a natural sympathy which the actual occasions have for the whole, a general connectedness and unity of the universe which they reveal in themselves by the very fact of their constitution. This rudimentary feeling or experience is, to Whitehead, of the nature of unconscious 'prehension' or taking into relation of the other actual occasions, a grasping of the characteristics of every aspect of the universe.