Badiou is known for his theorisation of the Event, for example in his book Being and Event; it's clear though that it's not an event in these term:
smiles, walks, dances, weddings, explosions, hiccups, hand-waves, arrivals, departures, births and deaths, thunder and lightening: the variety of the world seems not only to lie in its ordinary citizens - animals, and physical objects, and perhaps minds, sets and abstract particulars but also in the things that happen to, or are performed by them
Material objects, such as stones and tables are said to exist; events are said to occur
It seems, somehow, closer to how Vaclav Havel, in his collection of essays, Living in Truth, wrote:
That the same holds for non-specific knowledge is shown by many historic instances of an unprecedented cultural, political and moral upsurge throughout society, where the original nucleus of crystallisation or catalyst was an act of social self-awareness carried out, and indeed directly and 'physically' percieved, only by a quite a small and exclusive circle. Even subsequently, that act may have remained outside the apperception of society at large, yet it was still an indispensable condition of its upsurge.
Is this a useful characterisation of how Badiou thinks through the notion of event? And is it a notion with earlier antecedents?