Many, many things last more than a decade. A stone house (of which there are many abandoned in the UK) will stand visibly for centuries.
There are many differences between bunkers and the pyramids. The biggest one is that bunkers were designed to be as low profile as possible. They are nowhere near the scale of the pyramids. Probably the next most important difference is the location. The pyramids were built in a desert environment which is hostile to the biggest enemy of manmade buildings - vegetation.
I'm not arguing that the pyramids aren't an incredible feat, or a monument to the achievement of an otherwise very low-technology early society. What I'm arguing against is the idea that the building of a fusion reactor would somehow be the first human development which would surpass the pyramids of giza as a monument of human achievement. The fact we have spacecraft in distant orbits which will remain exactly as they are for centuries or millenia is surely a much greater monument (albeit one which is hard to find). Our major cities (which are so entrenched that even if they were abandoned today would exist in some form for centuries, and certainly be easily identified for millenia) are vast monuments of human achievement. Can you really argue that the entirety of London is less of a monument of human achievement than the pyramids of giza?
There are many differences between bunkers and the pyramids. The biggest one is that bunkers were designed to be as low profile as possible. They are nowhere near the scale of the pyramids. Probably the next most important difference is the location. The pyramids were built in a desert environment which is hostile to the biggest enemy of manmade buildings - vegetation.
I'm not arguing that the pyramids aren't an incredible feat, or a monument to the achievement of an otherwise very low-technology early society. What I'm arguing against is the idea that the building of a fusion reactor would somehow be the first human development which would surpass the pyramids of giza as a monument of human achievement. The fact we have spacecraft in distant orbits which will remain exactly as they are for centuries or millenia is surely a much greater monument (albeit one which is hard to find). Our major cities (which are so entrenched that even if they were abandoned today would exist in some form for centuries, and certainly be easily identified for millenia) are vast monuments of human achievement. Can you really argue that the entirety of London is less of a monument of human achievement than the pyramids of giza?