Matryoshka dolls fascinated me when I was a kid. The childish joy of realising that encased within a doll was, a smaller doll! And then within that, another one! This recursive discovery ad infinitum was truly an ingenious device to keep a naive boy occupied for hours. Until he grows wiser and learns that repetition in the real world often means "boring!" and goes back into the garden and stomps on flowers again.
I thought I had long forgotten this immature conception. Until my eyes starting aligning themselves today.
Looks like in my daily working life of remoting and controlling various computers of physical or virtual nature, the Matryoshka doll neo-movement is far from dying.