Heidegger applies Vorgang and Vorkommnis(se), to present-at-hand, usually natural events. It is misleading to assimilate different types of event -- the warming of a stone, an animal's seeing and grasping -- under the heading of Vorgang in the sense of a sequence of Vorkommnisse. Animals engage in behaviour (Benehmen), stones do not (XXIX, 344f). Early on he distinguishes Vorgang from Ereignis. An experience is not a Vorgang, an occurence that is an Objekt for me, but an Ereignis. He writes Er-eignis and thus links it to eigen, etc: 'Experiences [Erlebnisse] are Er-eignisse, in so far as they live off what is one's own [aus dem Eigenen leben] and life lives only thus' (LVI/LVII, 75). A 'situation' contains 'not static elements, but "Ereignisse". The happening [Geschehen] of the situation is no "Vorgang" -- as e.g. an electrical discharge observed in a theoretical attitude in a physics laboratory. Ereignisse "happen to me" ['passieren mir']' (LVI, 205). A situation is not neutral; it provides Motivation.

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