From this we can draw out the explanation of what a zeitgeist - literally time-spirit - actually is. A zeitgeist is a time-dependent egregore, comprised of all the souls that make up a particular generation or set of closely related generations. A zeitgeist therefore emerges when that generation emerges and starts to express its distinct worldview, and then slowly fades and dies as that generation ages, thins out, and finally becomes extinct. Once the egregore dies then so, slowly, does its worldview die with it, including its unique slant on art, politics, personal relationships, and morality, among many other things. For example, as a child in the 1970's the Edwardian zeitgeist was still very active and common to experience. This was especially notable in children's television, in which many programmes had a distinctively Edwardian flavour, such as Bagpuss, Andy Pandy and Ivor The Engine. It was obvious to me, even at a very young age, that the people who made these programmes had a far more sentimental and indulgent sensibility than my own comparatively modern and efficient parents. The first three Dr. Who's were all essentially Edwardian gentlemen, especially Jon Pertwee with his antique car Bessie. Then there was Vision On's eccentric inventor Wilf Lunn with his waxed moustache and excessive use of ornamental brass fitments. Indeed, a big part of the magic of Seventies kids' TV was that it was anything but contemporary - everything seemed to be a precious relic from an age that was already flickering out. There was plenty of Edwardianism on adult television too, with dramas such as Upstairs, Downstairs and The Duchess of Duke Street, and Leonard Sachs' thesaurus-busting introductions to The Good Old Days. There were Edwardian films a-plenty most obviously with The Railway Children, Chitty-Chitty Bang-Bang and Those Magnificent Men In Their Flying Machines, but also those long-forgotten Doug McClure films such as At the Earth's Core and The Land That Time Forgot. There was a time when the presence of Doug McClure in a film cast was the absolute guarantee of cinematic excellence for every schoolkid, although the collective memory of this period was effectively wiped clean by the final disappearance of Edwardianism and the emergence of Star Wars.
And this is why death is important. As a generation dies off, and particularly as its most notable and lauded members expire, so to a large extent do the values and beliefs constituted in its egregore. And so as the baby boomers die, so too does the zeitgeist that they created. Their world will still be seen, like that of the Edwardians, preserved in photographs, films and music, but it will no longer be able to be felt. And when generations like mine who were at the tail end of "the rock'n' roll years", and could still divine some of its yearnings, also disappear then the whole era will seem strange, perhaps even unfathomable. This is already happening with the cultural minutiae of the era - who nowadays cares about Oz magazine? Or Fat Freddie's Cat?, or Victor Spinetti? But I also suspect that even the most highly regarded post-war popular music, from The Beatles to Jimi Hendrix to Miles Davis, will eventually lie neglected - not because it succumbs to harsh critical re-evaluation, or falls foul of changing morals, but simply because it becomes incomprehensible, that the yearnings that it expressed are no longer felt or understood.
The death of David Bowie in 2016 was not only important culturally, but also politically, and it was not entirely coincidental to the results of the EU referendum and the US presidential election, as well as other seemingly more minor political events. Bowie, with his libidinal, liberatory energy, occupied a key position in the collective egregore of post-war popular culture, and was irreplaceable once he was gone. And so the rise of nationalist populism is to a certain degree a consequence of the eclipse of the idealist, utopian egregore that arose in the generations born in the aftermath of World War II. Progressive liberalism in the USA is nowadays largely a rearguard action that is trying to rekindle the dwindling flame of the Civil Rights era. One of the big problems of the "Marxist-Lennonism" of the British left is that its utopian vision of a world transformed is, far from being a vision of the future, rather an attempt to hold on to the dying post-war egregore. Today's progressives are still betrothed to the 20th Century and its transformative social ideals, while the formless waters of the 21st Century, inscrutable and treacherous, slowly lap in around them.