John Cage recital set to last 639 years recently witnessed a chord change

Some art-haters in the comments, so to defend this piece of contemporary art for a moment: one thing I love about it is a commitment to the long future of art, creativity, and civilization. What does it take to keep an instrument playing for six hundred years? To commit to that idea -- like the century-long projects of cathedral building in the middle ages, or the idea of planting trees you won't live to see mature -- is (to me) the awesome thing about the Halberstadt performance. All rendered in a medium (church organ) that has existed for an even longer time.

It's a pretty hopeful, optimistic view of the future in a time of high uncertainty, but also represents a positive argument: it's worth doing these things because they are interesting, weird, and fun, and because they represent a continuity with past and future people we will never meet.

Plus, you can already buy a ticket to the finale, so your distant descendants can go see it :)

I'm not disagreeing with you, but you should invert the question and think about it.

In the case of a cathedral, I think it is relatively easy to commit to the project you won't see through, it has a significance to those people making the commitment. What becomes much more challenging is when future generations don't have the same level of commitment, it's a much bigger ask to stop. Maybe there is a better use of the resources that could impact people immediately; if it's a church, I'm thinking feeding the hungry and clothing the naked sorts of things. It's hard to stop something that "we've just been doing." It's also hard to ask "why are we doing this?"

In 200 years, suppose there is some crisis we cannot predict and the recital is to be interrupted or stopped. There will be an incredible amount of pressure on somebody to make a good choice. Pressure that was created by a distant ancestor, of sorts. That might be part of the beauty of it, that might be part of the bond that ties different people together throughout time and it might be wonderful. What if there is a caretaker that is ready to retire and cannot find the next caretaker? That seems like a horrible position to be in.

Japan is or was doing multi-generational mortgages a while back (I assume they might still be.) as it was the only way a family could afford to buy a property. I can see that being a tremendously loving act for your children or grandchildren in providing a property that they will own, but I could just as well see it being a gigantic burden to them, what if they want to live somewhere else? Them following their bliss effectively changes the living and working future of the parents.