Man I have used that analogy and love it.
I magine the blocks are labeled. The ones that have been removed say 1874, 1925, generation of 1914, etc..
Then a big hand is pulling out one block that will obviously make the" tower" fall. It is labeled 607 or 1914.
I've wanted to draw a cartoon of this. I do I'll post it.
good topic Megatron